Another way it can do this is to either add in new boss fights or change existing ones. Some of them may take place in the main story, serve as optional encounters or are powerful opponents who will give you hell to pay if you're not prepared to properly take them on. Regardless of the reasons, the boss, Optional Boss, Superboss tend to be in one or more of the following categories:
- Platform Exclusive Type: The boss, Optional Boss and/or Superboss tends to differ depending on which platform you play the game on (e.g Nintendo DS or Nintendo Wii), in some cases due to being a Reformulated Game, a Video Game Remake, copyright restrictions etc.
- Region-Exclusive Type: This version of the boss, Optional Boss and/or Superboss may differ based on the national region the game was released in. Depending on the boss, this can either be considered a Regional Bonus or a Bad Export for You, though Difficulty by Region is in effect regardless.
- Technical-Exclusive Type: Tends to appear in a Reformulated Game either due to difference in developer teams or due to technical limitations of the platform the game is available for. This one tends to overlap with Platform Exclusive Type due to how a Reformulated Game is often designed to compensate for limitations of weaker hardware.
- Update-Exclusive Type: These ones tend to be seen in Game of The Year Edition versions of a game or ports and remakes of an older game either as a means of making the fight more unique, adding aspects that were originally intended for the battle, fixing any problems that fans had with the original fights or simply to give the player a new challenge etc.
- Variant-Exclusive Type: Games that are built around One Game for the Price of Two may have their own unique bosses, Optional Boss or Superboss to further differentiate each version of the game from the others.
Note that this only applies to official games. Fan-made remakes or mods will not be counted as their own entries, though if an individual entry for an official game warrants it, they may be acknowledged in context notes; fan-games are allowed because they're aren't a remake of an official game and are considered their own game.
Additionally, minor changes such as music, design changes and/or a Palette Swap cannot apply on their own, though they can be part of the overall changes to the actual boss fight; for the sake of simplicity, bosses exclusive to Another Side, Another Story modes and Downloadable Content campaigns (not to be confused with individual updates) will not be counted.
Examples for when this trope applies to the Final Boss and/or True Final Boss go in Version-Exclusive Final Boss.
Compare: Another Side, Another Story, Boss Battle, Difficulty by Region, One Game for the Price of Two, Optional Boss, Reformulated Game, Regional Bonus, Superboss, Updated Re-release, Version-Exclusive Content
Contrast: Bad Export for You, Optional Boss, Route Boss, The Unfought
Because of its status as an Ending Trope, all spoilers were removed. Proceed with caution. You Have Been Warned.
Examples
- Dragon Quest Swords: The post-game in the EU and US versions of the game added in the purple mirror bosses named Nomegoen, Der Gib, Valgirt Nedlog and Edahs Sohpix who were Upgraded Boss variants of Nomeg, Salta, Valgirt and Xiphos the Deathbringer's One-Winged Angel form. Unlike the other mirror bosses, these fights don't require you to have a certain amount of renown before you can fight them.
- Divinity: Original Sin II: The Definitive Edition has several more fights than the original release, including bosses.
- The Kraken that shipwrecks the Player Party in the prologue is added as an Optional Boss in Act IV, giving a taste of its combat abilities before it's seen again with the Final Boss.
- Loic the Immaculate, an enemy from the previous game, is added to Act IV as a hidden Superboss.
- Final Fantasy XII: The Zodiac rereleases introduced a Trial Mode that ended on a Wolfpack Boss fight against all five Judge Magisters. Judges Drace and Zargabaath can only be fought in this final Superboss fight.
- Kingdom Hearts
- Kingdom Hearts I: Overseas versions of the games added Ice Titan, Kurt Ziza and Sephiroth to the game as Superboss encounters. Final Mix went further and added a fight against Unknown, who turns out to be the Big Bad of Kingdom Hearts II.
- Kingdom Hearts II: The Final Mix version added in a mandatory fight against Roxas in The World That Never Wasnote It also adds optional fights against the Absent Silhouettes note souped up rematches against all the members of Organization XIII and the Lingering Will.
- Kingdom Hearts: Birth by Sleep: Mysterious Figure was added to the International and Final Mix versions of the game as a Superboss, and three new Mirage Arena bosses Armour of Eraqus, Monstro and No Heart were also added to the Final Mix version of the game.
- Kingdom Hearts III: The Re𝄌Mind update adds in new Superboss encounters against Recreated Data of all 13 members of Real Organization XIII and Yozora. The former are stronger versions of the originals with more challenging attack patterns and new attacks (notably, Ansem: Seeker of Darkness, Xemnas and Young Xehanort are all fought seperately instead of the Wolfpack Boss they were in the main story.)
- Lunar Knights: The original version of the game had a crossover event with MegaMan Star Force that allowed you to fight Taurus Fire. This was removed from overseas versions of the game, preventing you from accessing the sidequest.
- Mega Man Battle Network:
- Mega Man Battle Network 1: The NDS Updated Re-release Rockman.EXE Operate Shooting Star added in a new antagonist called Clockman.EXE who kidnaps Roll.EXE and Harp Note and takes them 200 years back in time.
- Mega Man Battle Network 3: White and Blue: This game was the one that started the trend of version exclusive bosses in the series. MistMan.EXE was exclusive to White version and Bowlman.EXE and Punk.EXE were exclusive to Blue version respectively.note
- Mega Man Battle Network 4: Red Sun and Blue Moon:
- GutsMan.EXE, FireMan.EXE, WindMan.EXE, Roll.EXE, ThunderMan.EXE and SearchMan.EXE are exclusive to Red Sun.
- AquaMan.EXE, NumberMan.EXE, MetalMan.EXE, WoodMan.EXE, JunkMan.EXE and ProtoMan.EXE are exclusive to Blue Moon.
- Due to the game's tournament focus, you could fight the opposite version's exclusive bosses through the game's tournament feature. In addition, the superbosses in Black Earth are dark versions of the Navis exclusive to your chosen version of the game.
- Mega Man Battle Network 5: Team Colonel and Team ProtoMan:
- If the player has the 'Colonel'' version, you end up fighting Colonel.EXE, KnightMan.EXE, ShadowMan.EXE, TomahawkMan.EXE, NumberMan.EXE, Dark Colonel.EXE and ToadMan.EXE.
- If you're playing the Proto Man version, instead you fight ProtoMan.EXE, MagnetMan.EXE, GyroMan.EXE, NapalmMan.EXE, SearchMan.EXE, Dark Protoman.EXE and Meddy.EXE.
- Naturally, this means that the Dark Soul Navis fought in Nebula Area are also exclusive to each version due to them being dark versions of the Navis that are part of either Team Colonel or Team ProtoMan.
- Mega Man Battle Network 6: Cybeast Gregar and Cybeast Falzar:
- Cybeast Gregar has you fight HeatMan.EXE, GBeast, SlashMan.EXE, ElecMan.EXE, EraseMan.EXE, ChargeMan.EXE, and Gregar.
- Cybeast Falzar has you fight AquaMan.EXE, FBeast, TenguMan.EXE, TomahawkMan.EXE, GroundMan.EXE, DustMan.EXE, and Falzar.
- The Count is exclusive to the JP version of the GBA games and was removed from the overseas versions, though the Legacy Collection versions of both games allowed you to fight him regardless of region.
- Mega Man Star Force:
- Mega Man Star Force: Pegasus, Leo, and Dragon: The Superboss and their weaker shadow tends to differ depending on which version of the game you play, with Leo Kingdom being fought in Leo, Dragon Sky being fought in Dragon and Pegasus Magic being fought in Pegasus. The Lunar Knights sidequest and by extension, the Cutscene Boss against Margrave Rymer is also removed from US and EU versions.
- MegaMan Star Force 2 has the DX Bosses who are golden, super powerful versions of various bosses fought throughout the game. Unfortunately they were removed from the EU versions of the game along with some other content such as Wave Commands and Tribe King.
- Yo-kai Watch Blasters:
- The boss for Chapter 7's first sub mission is Hardy Hound for the White Dog Squad version while Red Cat Corps players fight Rubeus J.
- In Chapter 10, a previous Final Boss makes a comeback in a sub mission. For White Dog Squad players it's McKraken while Red Cat Corps users get Dame Dedtime.
- The base game's Superboss changes depending on the version. White Dog Squad players fight Red Paws while Red Cat Corps players fight Swirlious Omai.
- The Moon Rabbit Crew update comes with a Palette Swap of the True Final Boss of the base game. White Dog Squad users get Swirlious Gold, while those aligned with the Red Cat Corps get Golden Claws.
- Zelda II: The Adventure of Link: The Famicom version has a harder version of the second boss, Helmethead as the fifth boss. The US version replaces them with Gooma.
- Dead Rising 2: Off the Record: Due to being a retelling of the original Dead Rising 2, it shares almost all the same psychopaths. There are some Psychopaths unique to this version though.
- Leon Bell and Raymond Sullivan are not bosses in Off the Record with the former being Adapted Out and the latter being a case of Adaptational Heroism. Instead, Chuck Greene and Stacey Forscythe take over their respective roles with Chuck getting an added Molotov attack on top of everything Leon could do, and the fight against Stacey has her piloting a mech.
- One psychopath completely unique to Off the Record with no presence in the original at all is Evan MacIntre, who has a vendetta against Frank West for killing his brother Adam.
- The SNES port ofTeenage Mutant Ninja Turtles: Turtles in Time, in addition to the Version-Exclusive Final Boss Super Shredder, adds exclusive battles with the Rat King and Shredder's battle tank, and replaces Cement Man and Tokka & Rahzar with Slash and Bebop & Rocksteady, respectively.
- The PlayStation port of the first Dead or Alive throws in two new characters prior to their "official" debuts in the second installment, not only adding Bass to the regular roster, but also including Ayane as a Bonus Boss who can only be fought by winning every match up to that point without continuing (and could eventually be unlocked as a playable fighter as well).
- Mortal Kombat
- Mortal Kombat Trilogy can either have Goro, Kintaro and Chameleon in the disc based versions of the game or Kahmeleon in the N64 version.
- Mortal Kombat 4 adds Goro as a sub-boss to the console ports.
- Mortal Kombat: Deception adds Goro and Shao Khan to the Gamecube port and Blaze to the PSP port.
- Mortal Kombat 9 on the Vita adds several unique what-if characters to the Challenge Tower including a Classic Ninja version of Tremor and a cyberized version of Reptile to join the other cyborgs.
- Super Smash Bros. for Nintendo 3DS and Wii U: Stage bosses are present in some arenas that will interrupt the match and can be defeated for an additional KO point. Exclusive to the 3DS version is Dark Lord/Dark Emperor on the Find Mii stage. Exclusive to the Wii U version are Metal Face on the Gaur Plain stage and Ridley on the Pyrosphere stage. The only stage boss to appear in both versions is Yellow Devil on the Wily's Castle stage.
- The Xbox version of Quake III Arena, Quake Arena Arcade, includes all the PC bosses in their respective slots, but also adds Pi from Quake III: Team Arena as a seventh boss (sixth prior to Xaero).
- In the PC version of Unreal Tournament, the Challenge ladder (the last in the game) is fought against Xan Kriegor (the Final Boss) and his team of War Machines (canonically called "The Corrupt"). However, in the Playstation 2 and Sega Dreamcast versions, the Challenge ladder is instead composed of three bosses that accompany Xan: Damien (a regular human who carries Spikes of Villainy), Rampage (a mechanical abomination later ported to the PC version as the WarBoss) and Dominator (a full-blooded Skaarj who contrasts with the game's Human-Skaarj Hybrids, including his namesake).
- Devil May Cry 3: Dante's Awakening: The original version of the game only had you fight Jester once. The Special Edition adds in two more Optional Boss encounters against him that are only slightly harder than the original.
- Gauntlet: The NES version has a password gate at level 100, and a three-headed hydra that breathes fire.
- Dragon Quest Heroes I·II: This Japan exclusive Updated Re-release added in a Superboss fight against Malroth, the Final Boss of Dragon Quest II.
- RuneScape: With the schism between RS3 and Old School Runescape, both games have their own set of bosses released after 2007, which is when the version of the game Old School is based on was active. RS3 has the likes of the Ambassador a Lovecraft Lite Eldritch Abomination fought under the sea; Kerapac, a dragonkin bound to an Elder Artifact that allows him to be a Time Master; and Zamorak, God of Chaos, who needs to be banished from Gilenor by re-instituting the Edicts of Guthix. Old School has creatures like Zulrah, a mutant snake that lives in the Poison Waste; The Nightmare, a boss fought underneath the town of Slepe; and the Moons of Peril, spirits fought in a cavern beneath Zeah. Some Crossovers have occurred; Nex, previously an RS3-exclusive boss, was brought to the game in 2022, while Tzkal-Zuk and Vorkrath, previously OSRS exclusive, have come over in 2022 and 2023 respectively.
- Azure Striker Gunvolt 2: Thanks to Inti Creates' publishing partnership with Yacht Club Games for the Azure Striker Gunvolt: Striker Pack for the Nintendo 3DS, the 3DS and the later Switch versions of the game have an optional boss battle with the titular Shovel Knight, who can be accessed by his amiibo. Beating him will give players a special item for Gunvolt and Copen that can only be unlocked through this boss battle.
- Batman: Revenge of the Joker: The Nintendo Entertainment System and Sega Genesis versions have the same boss fights against Ace Ranger, Minedroid, Master CPU and The Joker. The Game Boy version has a different roster consisting of only Dark Claw, Shogun Warrior and Foul Boy. The SNES version has Ace Ranger, Jetpack Trio, Heli, Master CPU and Tank.
- Bionic Commando (1988): The Rearmed remake drops the Wired Gunner, upgrades the Platoon Commanders, the "Pi-Pi-Pi" robot(D1 Beetle), the Giant Soldier(Gottfried Groeder), and Master D's gunship, adds three all-new bosses in the form of the Fabricator, Power Pod, and Siege Machine, and replaces the Albatross Colossus Climb battle with a Battleship Raid stage.
- Donkey Kong:
- Donkey Kong Country: The SNES version of Necky's Revenge pits you against Master Necky Sr., a harder purple Palette Swap of Master Necky Jr.. The GBA version alters the boss fight by turning it into a Dual Boss against Master Necky Jr. and Master Necky Sr..
- Donkey Kong Country 2: Diddy's Kong Quest: The SNES version of Stronghold Showdown is essentially a cutscene of the player finding Donkey Kong only for him to be taken to the Flying Krock. The GBA version changes this by replacing it with a new boss fight against a giant orange Kremling called Kerozene.
- Donkey Kong Country 3: Dixie Kong's Double Trouble!: The GBA version adds in a new boss called Krocktopus who is now the world boss of Razor Ridge instead of Barbos, who is relocated to Pacifica, a world exclusive to the GBA version.
- The Itchy and Scratchy Game: Each level in the SNES version of the game ends with a boss fight between Scratchy. These boss fights are absent from the Game Gear version.
- Kirby:
- Kirby's Adventure: Rolling Turtle is replaced by Phan Phan in the GBA remake Kirby: Nightmare in Dream Land. Notably, this makes Rolling Turtle the only mid-boss in the series that is never acknowledged in future games.
- Kirby Super Star: The Nintendo DS version, Kirby Super Star Ultra, adds in several new bosses, most of which are found in the sub game Revenge of the King, and are upgraded versions of bosses fought in Spring Breeze (except for Kabula). They are also fought again in The True Arena, the final sub-game in this version of the game.
- Kirby's Return to Dream Land: The Nintendo Switch version, Kirby's Return to Dream Land Deluxe, has a new sub game, "Magolor Epilogue: The Interdimensional Traveler" that has exclusive bosses. These bosses are added to this game's version of the True Arena, which originally just consisted of the bosses from the game's Extra Mode. Not only that, the version of Magolor Soul fought in Deluxe's True Arena is made more difficult in comparison to the original Wii version.
- LEGO Batman Series: Man-Bat and Killer Moth are fought in the console versions of the game, but are replaced by Bane and Scarecrow in the DS version instead, the latter two being The Unfought in the console versions. You unlock the former two in a bonus level in the DS version.
- Mega Man:
- Mega Man 1: The NES version had only 6 Robot Masters, with Oil Man and Time Man being added to Mega Man Powered Up. In addition, the Powered Up version also added Proto Eye, Mega Man? and also expanded on the Copy Robot by having it be a copy of your current playable character instead of just Mega Man himself.
- Mega Man 2: The Tiger Electronics version of the game doesn't have Wood Man and Crash as Robot Masters in addition to also not having Picopico-kun, Guts Tank, Boobeam Trap and Wily Machine 2 as fortress bosses. Bizarrely enough, one of the bosses in the Tiger Electronic version is Croaker, who in all other versions is just a regular enemy.
- Mega Man 8: Cut Man and Wood Man are mini-bosses exclusive to the Sega Saturn version of the game. They appear in the Middle Stage and Search Man's stage respectively and can only be fought once.
- Mega Man 9: Fake Man only appeared at the end of a stage that was Downloadable Content, but was made an unlockable Optional Boss in the Mega Man Legacy Collection 2 version of the game.
- Mega Man 10: Punk, Enker and Ballade were DLC bosses in the original game, and were unlockable bosses in the Mega Man Legacy Collection 2 version of the game.
- Mega Man: Maverick Hunter X:
- Most of the bosses have their attack patterns changed from their original versions in Mega Man X, and some of their rematches ended up being shuffled around to different Sigma Palace stages. Additionally, the intro boss fight against Vile is no longer a Hopeless Boss Fight and has to be defeated, and his fight in Sigma Palace 1 is reassigned to Sigma Palace 3 and no longer includes Vile's Ride Armour during the first phase.
- Vile Mode replaces the intro boss fight with Vile himself with a one against X, with a Dual Boss against X and Zero serving as a Version-Exclusive Final Boss.
- Mickey Mousecapade: In the Japanese version of the game, the bosses are Cheshire Cat, Dodo, Caterpillar from Alice in Wonderland (1951), Captain Hook from Peter Pan (1953) and Queen of Hearts from Alice in Wonderland, respecitvely. In the US version the bosses are Witch Hazel, Tick-Tock the Crocodile from Peter Pan, Kaa from The Jungle Book (1967), Pete and Maleficent from Sleeping Beauty (1959), respectively.
- Prince of Persia 1: Jaffar was originally the sole proper boss, not including Boss in Mook Clothing enemies such as the Skeleton, Politician, and Mirror Image. The Japanese computer, TurboGrafx-16 CD, and Sega CD ports added a penultimate battle with Jaffar's right-hand man, and the Super NES version featured a full lineup of new bosses. The Xbox Live Arcade remake, in addition to reworking the final battle with Jaffar, replaced the Politician with the Gatekeeper, who is fought a second time as the Pre-Final Boss.
- Puggsy: The Sega CD version of the game added in three boss fights against a giant hermit crab, a mouse being dragged around by a magic sword, and a giant spaceship which is actually a scripted FMV video. However unlike the Sega Genesis, the other five bosses (and the Final Boss) lost their unique boss themes and all bosses in the game share a single battle theme.
- Rainbow Islands: The arcade version has a full 10 worlds, with three of them being removed from the NES and SMS versions which also meant that the Clown, Dragon and Demon bosses were removed with Sayo and King Fossil being added in.
- Rayman
- Rayman 2: The Great Escape
- In the PlayStation port of the game, Zero-Effort Boss Umber is given a dose of Adaptational Heroism, and as such, the Sanctuary of Stone and Fire replaces him with a new boss, a ninja henchman (Who in the other versions is a rare late-game enemy).
- Rayman Revolution adds in three new bosses: the Boss Biditank which is fought in the Pirate Factory, Boss Chenille which is fought Beneath the Lava Sanctuary, and Grolem 13, the fourth Mask Guardian who is fought at the Iron Mountains.
- Rayman 3: Hoodlum Havoc: The GBA version has a complete different roster of bosses compared to the console versions due to its nature as a Reformulated Game. Unsurprisingly, most of its bosses are taken from Rayman 2 with Scaleman, a late game boss being based off an unused boss from the console version of the game, and the final boss is Razorbeard in the Grolgoth.
- Rayman 2: The Great Escape
- Shovel Knight: Once the game was ported to other platforms, the PlayStation 3 and Xbox 360 versions added in exclusive boss fights with Kratos and the Battletoads respectively.
- Sonic the Hedgehog
- Sonic the Hedgehog 2: The 2013 Remaster adds in Brass Eggman who can can be encountered if the player falls down the large pit in Mystic Cave Zone and makes it to the end of Hidden Palace Zone. This fight is also retained in Sonic Origins due to that game's version of Sonic 2 being based off the 2013 Remaster version.
- Sonic the Hedgehog 3 when locked onto Sonic & Knuckles, omitted the original Final Boss, Big Arms, from Sonic's campaign, only having Knuckles fight it (piloted by Egg Robo instead of Eggman). Sonic Origins reinstated the boss for Sonic w/ Tails.
- Sonic Colors: The Wii version has Rotatatron, a badnik resembling a ferris wheel and it's Upgraded Boss variant Refreshinator. The DS version replaces them with Globotron, a badnik resembling a terrestrial globe with arms and it's variant Drillinator respectively. The other bosses Captain/Admiral Jellybean and Frigate Orcian/Skullian have their fights be redesigned. The Capitan/Admiral Jellybean fights are purely against them and neither of them have a ship you must deactivate. The Frigate Orcian/Skullian are 2D auto-scrolling bosses, with Frigate Orcian occasionally descending to the touch screen so you can damage them while Frigate Skullian requires you to attack an external arm to damage it.
- Sonic Generations: Both the console and 3DS versions of the game have Metal Sonic, Shadow and Silver as rival battles. The console versions are battles against each of them whereas the 3DS version has you race each of them to the finish.The main bosses however are completely different between versions: the console versions have Death Egg Robot, Perfect Chaos and Egg Dragoon whereas the 3DS version have Big Arms, Biolizard and Egg Emperor instead.
- Sonic Unleashed: The Playstation 3 and Xbox 360 versions have the Egg Cauldron, which is fought with the Tornado. The Playstation 2 and Nintendo Wii versions don't have the Tornado Defence mini-game, and consequently omits the Egg Cauldron fight as well.
- Sonic Lost World: Both the Wii U and Nintendo 3DS versions have boss fights against the Deadly Six with Dr. Eggman as the final boss, though the fights tend to play out differently between versions due to the Nintendo 3DS version being a Reformulated Game.note The Wii U version does have exclusive bosses in the form of an Optional Boss at the end of the Hidden World and also reskinned versions of the Deadly Six themed after the bosses of NiGHTS into Dreams…. The 3DS version lacks those fights, but does have a harder variant of the Final Boss with different attacks.
- Spark the Electric Jester 3: The Endless Dive DLC adds in 2 superbosses. The first one ju a: not in kon troul is a harder monochrome version of the final boss fought 100 floors in the titular mode. Defeating them unlocks the fight with Freom: Mk 0 in which the player fights a tag team battle against Freom: Mk 0 and Limerent Claritas
- SpongeBob SquarePants
- SpongeBob SquarePants: Battle for Bikini Bottom: The GBA version of the game has a fight with Robo-Squidward which requires you to climb onto it's tentacles so you can attack the head. Funnily enough, the console version did intend to have a fight with Robo-Squidward there as well but ultimately went unused. The Rehydrated version of the game does bring Robo-Squidward back... as a setpiece for a Multi-Mook Melee mode.
- The SpongeBob SquarePants Movie (THQ): The console versions of the game is a 3D platformer and has the Frogfish, the first fight with Dennis where you play as Patrick due to Dennis using Spongebob's body as a bludgeoning tool, and the second fight with Dennis where you play as Spongebob. The GBA version is a 2D Platformer changes this by making the Frogfish the third boss and has the Thug Fish (the one who steals the Pattymobile) as the first boss and another Thug (the one that Spongebob and Patrick encounter in the Thug Tug) as the second boss. The Cyclops isn't The Unfought like in the console versions and gets their own boss fight before the rematch with Dennis.
- Super Mario Bros. 2:
- In the original Doki Doki Panic version, the World 5 boss is another rematch against Mouser; in all other versions, it's Clawgrip.
- In all other versions of the game, the World 3 boss is a rematch against Mouser, the World 1 boss. The GBA version changes this by replacing World 3 Mouser with a giant robot Birdo, called "Robirdo"; in turn, that Mouser fight is moved forward to World 6, replacing the second fight with Triclyde.
- Toy Story 2: Buzz Lightyear to the Rescue!: The console and PC versions of the game have several boss fights, some of which are optional. The GBC version in contrast is far simpler with only three boss fights, two of them being against Emperor Zurg.
- Wonder Boy:
- The two exclusive areas in the Sega Master system port of Wonder Boy 1 feature God of Thunder-type bosses with lightning-based attacks and unique Battle Theme Music. These are the only two bosses that aren't head swaps of King/Drancon.
- The SMS port of Wonder Boy in Monster Land has an exclusive stage with two bosses: an optional wizard, and a Medusa-like creature who behaves like an upgraded version of the Myconid Master.
- Ghostbusters: The Video Game: Several bosses vary between the stylized (Wii & PS2) and realistic (PS3/PC/360) versions. For example, the boss in the museum level in the stylized version is a T-Rex skeleton possessed by ghosts, while the boss in the realistic version is the ghost of the museum's former chairman.
- The Chrono series:
- Chrono Trigger: The DS version added in several new boss fights that can be found in the new bonus dungeons Lost Sanctum and the Dimensional Vortexes. Completing the Dimensional Vortexes is required if you intend to take on the Dream Devourer and unlock the new exclusive ending.
- Chrono Cross: Ozzie, Slash and Flea were added as a Superboss that could be fought in New Game Plus in the NA versions of the game.
- Dragon Quest:
- Dragon Quest I:: The HD-2D remake adds 6 new bosses called Armageddon, Goregoyle, Mirage, Robbin' Ood (and his minions called Robbin' Huddle), Sorcerer and Spiketail.
- Dragon Quest II: The HD-2D remake adds several bosses that appear in the main story and allows the player to fight Xenlon and both forms of Dragonlord's Great Grandson.
- Dragon Quest III: Remakes from the SNES version onwards added in Xenlon, who can be challenged and defeated with several selectable wishes as your reward. The GBC added in Grand Dragon note who could only be fought once the player obtained all Bronze and Silver Monster medals, and awarded the player with the Rubiss Sword after besting him a rematch if you defeated them in under 18 turns. The Nintendo Switch keeps both superbosses and also adds a few new story mode bosses called Ripper of the Rift, Dying Fire and Chiromancer & Madvlad as well as battles with Garboyle (who fought Ortega in the opening sequence) in Mt. Necrogond and the Soul of Baramos in the Tower of Rubiss.
- Dragon Quest IV: The PSX and DS versions of the game added post-game boss fights against a Dual Boss called Foo Yung and Chow Mein. Defeating them is required if you intend to resurrect Psaro and fight the True Final Boss.
- Dragon Quest VIII: The 3DS versions added in two new Bonus Dungeons called the Alter of Wroth and Memories Lane, which have their own bosses. The former adds in Juggerwroth who is a Sealed Evil in a Can who has escaped and must be taken down in a two phase battle where the party is assisted by Marcello. The latter is a Boss Rush where you fight the Memoriam bosses, stronger versions of main story bosses with Estark as the final opponent.
- Dragon Quest XI: The strongest trials the player can face in the 3DS version are Erdrick's Restless Armour and several monsters with colour palettes resembling past main villains. Defeating them unlocks the End of Time, a golden reskin of Calasmos and the hardest boss of that version. The Definitive version retains the bosses added from the 3DS version and adds in The Wheel of Harma: Secret Trial and the Timewyrm, a golden Palette Swap of Mordragon.
- Final Fantasy: The franchise is known for adding Optional Bosses and Superbosses in Updated Rereleases.
- Final Fantasy I: The Dawn of Souls release for GBA added the "Souls of Chaos", which feature bosses from the four other Nintendo-era Final Fantasy games note . The 20th Anniversary Edition adds the Labyrinth of Time and Chronodia as a Superboss, with eight different forms depending on how well you did in the dungeon beforehand.
- Final Fantasy II: "Dawn Of Souls" adds the campaign "Souls of Rebirth", which brings in a slew of new bosses, including a new Superboss variation of the Behemoth as well as a new final boss, the Light Emperor. The 20th Anniversary Edition adds more bonus bosses in the form of Phrekyos and Deumion, though what reward you get from his sidequest depends on if the player fights and kills him or not.
- Final Fantasy III: The 3D versions of the game add the Iron Giant as a Superboss that caps off the Mognet sidequest; the game originally lacked one.
- Final Fantasy IV: The Japan-exclusive Easytype version of the game included a different sprite for the Final Boss Zeromus. This would be referenced by the Advance and Complete Collection versions of the game, which add the Superboss Zeromus EG. Also, the order the Elemental Archfiends are fought in the rematch within the Giant of Babil is different dependant on the version of the game. Originally they were fought in the order of Scarmiglione, Rubicante, Cagnazzo, and Barbariccia. In the 3D and Pixel Remaster versions however, the order is instead Scarmiglione, Cagnazzo, Barbariccia, and Rubicante, aka the order they were originally encountered throughout the game.
- Final Fantasy V: The Advance and mobile versions of the game add upgraded versions of the original superbosses Omega and Shinryu dubbed Omega Mk II and Neo Shinryu respectively, while Enuo (a backstory figure mentioned in the game's story) features as the Bonus Dungeon's True Final Boss.
- Final Fantasy VI: The Advance and mobile versions of the game introduce updated variants of the Eight Dragons as bosses in the Bonus Dungeon, culminating with their master Kaiser Dragon (who was originally going to be in the game before being cut from the original release) and Omega Weapon after revisiting his room.
- Final Fantasy VII: The Superbosses Ruby Weapon and Emerald Weapon were after the original Japanese release of the game for the North American and PAL releases of the game, which were in turn "imported" back to Japan for the "International" version of the game.
- Final Fantasy X: The Dark Aeons were added for the International and PAL versions of the game, which were then carried over into the HD Remaster.
- Final Fantasy IV: The After Years: The Final Dungeon in the original 2D version had pulled bosses from other games in the series. The 3D version dropped these bosses and added new superbosses in the form of Lunar Dragon, Lunar Leviathan, Lunar Odin and Lunar Bahamut.
- OFF: The 2025 remaster of the game adds several optional bosses called Source, Maledicion, Psalmanazar & Herodotus, Justus, Carnival, and Cob, all of whom can be found in the previous Zones after their respective bosses have been defeated.
- OMORI:
- The console version has two unique boss fights at the end of the Boss Rush where you fight Omori's friends: Kel, Aubrey, and Hero as the penultimate opponent of the BASIL RUSH, with Mari as the final opponent. Normally, these three (minus Mari) would be your party members, and this is still true for the BOSS RUSH. However, the BASIL RUSH limits you to Basil and Omori for the entire run, and once completed cannot be done for the rest of the playthrough.
- Also on the console versions, after Mr. Jawsum is defeated on the Hikikomori route, returning to his office after going through Black Space will cause Hero to become Bossman Hero, a greedy, cold-hearted businessman similar to Mr. Jawsum. The rest of the group has no choice but to fight him to make him return to normal.
- Paper Mario: The Thousand-Year Door: The Nintendo Switch version adds in two post-game fights. Prince Mush is no longer The Unfought like in the original and is fought in an exhibition match. Whacka can be found at the bottom of the Pit of 100 Trials on repeat trips after defeating Bonetail and will engage Mario in battle after being hit once.
- Persona
- Persona 3: The FES version added an entire post-game Playable Epilogue called The Answer which had a slew of new bosses, as well as Upgraded Boss variants of the Full Moon Bosses. Persona 3 Portable allowed you to fight either Elizabeth or Theodore depending on if you picked either Makoto Yuki or Kotone Shiomi as your main character and completed all Vision Quests.
- Persona 3 Reload: The bosses are the same as the originals though some of their movesets are altered. During the main story, you can fight Shadow of the Abyssnote alongside Takaya. Additionally, this version of the game also adds Joker as a DLC Superboss.
- Persona 4: The Golden version has the Hollow Forest which focuses on Marie, a side character added in this version. She ends up being the boss of the dungeon, along with Kusumi-no-Okami as a One-Winged Angel form of her.
- Persona 5: The Royal version of the game adds an extra Palace for the Phantom Thieves to infiltrate. This Palace has four major bosses, with Sumire losing it and briefly turning against Joker halfway through followed by her Persona, Cendrillon, breaking away from her and fighting independently. At the end of the Palace, Joker faces off with the Ruler of the Palace, Maruki, and lastly, taking on Maruki's Ultimate Persona, Adam Kadmon.
- Persona 3: The FES version added an entire post-game Playable Epilogue called The Answer which had a slew of new bosses, as well as Upgraded Boss variants of the Full Moon Bosses. Persona 3 Portable allowed you to fight either Elizabeth or Theodore depending on if you picked either Makoto Yuki or Kotone Shiomi as your main character and completed all Vision Quests.
- Pokémon:
- Pokémon Gold and Silver: In the original games and remakes Heart Gold and Soul Silver, both Ho-Oh and Lugia are fought, at the Bell Tower and Whirl Islands respectively. In Gold and Heart Gold, Ho-Oh is fought before the Elite Four, while Lugia is fought first in Silver and Soul Silver. The remakes also added in encounters with the Legendary Birds, Mewtwo and the Weather Trio.note If you obtained the Enigma Stone from a Wifi event, you could also challenge Latios in Heart Gold and Latias in Soul Silver. Additionally, Giovanni could be encountered as an Optional Boss if you had an event Celebi, and the remakes replaced several battles with nameless grunts and executives with battles against the Team Rocket Executives Archer, Ariana, Petrel and Proton respectively.
- Pokémon Ruby and Sapphire: Team Magma and Team Aqua serve as the main antagonists of the Ruby and Sapphire versions respectively. Emerald has both villain teams with the games events now assigned to the most appropriate one. Additionally, the Box Art Legendary Pokémon you fight in the Cave of Origin differs between versions. Groudon is fought in Ruby, while Kyogre is fought in Sapphire. The Omega Ruby and Alpha Sapphire remakes have the same legendary Pokémon fought in the Cave of Origin, this time in their Primal form.
- In Emerald, a new character named Juan is introduced who replaces Wallace as the eighth Gym Leader. Wallace meanwhile is promoted to the Hoenn Champion, with a stronger team to fit the position, while original Final Boss Steven now becomes the Superboss, again with an upgraded team to fit.
- Omega Ruby and Alpha Sapphire also adds in a boss fight against Zinnia during the post-game Delta Episode and allows you to face Deoxys in space.note Additionally, you can obtain Regigigas by obtaining all 3 Regis and following a set of requirements and several other legendaries from the previous games by interacting with Hoopa portals.note
- Pokémon Diamond and Pearl:
- The box art legendary you fight at the climax of the game changes depending on which version you're playing: Diamond pits you against Dialga, while in Pearl you fight Palkia instead. Platinum has you battle Giratina's Origin Form instead after going through the Distortion World, though Palkia and Dialga are able to be caught if you return to Mt. Coronet during the post-game. You're also able to capture Articuno, Moltres and Zapdos in the post-game as well.
- Pokemon teams of important characters (i.e gym leaders, Cyrus, the Elite Four and Cynthia) are also changed in Platinum and there is even a post-game Dual Boss against Flint and Volkner at the Battle Zone.
- Pokémon Black and White: Unlike the other gyms in this game, the Gym Leader of Opelucid City differs between versions. In Black, the player has to battle Drayden, while in White, the player has to battle Iris. The antepenultimate fight against the box-art legendary also differs as well. In Black you end up battling Zekrom while in White it's Reshiram, this also changes N's team slightly because his legendary Pokemon is the opposite of the one you captured. During the post-game, you can capture one of the other Forces of Nature; In Black you battle Tornadus, while in White you battle Thundurus. For an extra challenge, Landorus can only be encountered if you have both Tornadus and Thundurus.
- Pokémon Black and White 2: During the climax Ghetsis will use either Black Kyurem in Black 2 or White Kyurem in White 2 after Kyurem absorbs the dragon N obtained in the previous game.
- Pokémon X and Y: The Box Art Legendary Pokémon you fight to capture differs between versions. X has Xerneas, while Y has Yveltal.
- Pokémon Sun and Moon: The Box Art Legendary that Nebby will evolve into for you to capture differs between versions. Sun has Solgaleo, while Moon has Lunala.
- Pokémon Ultra Sun and Ultra Moon: Which Legendary Pokémon Necrozma will forcefully fuse with before battling you differs between versions. Ultra Sun has Dusk Mane Necrozma (Necrozma and Solgaleo) while Ultra Moon has Dawn Wings Necrozma (Necrozma and Lunala). In addition, the Team Rainbow Rocket leaders use legendary Pokémon as the final slot on their team, with some of them differing between versions.note
- Pokémon Sword and Shield:
- The Stow-on-Side Stadium and Circhester Gym Leaders differs between versions. The Stow-on-Side Stadium has its gym leader be either the Fighting-type Bea in Sword or the Ghost-type Allister in Shield. As for the Circhester Gym, the Rock-type Gordie is fought in Sword, while the Ice-type Melony is fought in Shield.
- Near the end of the postgame quest the player must calm either Zacian (Sword) or Zamazenta (Shield). Additionally, during The Island of Armor, the player must battle either Klara (Sword) or Avery (Shield).
- Pokémon Scarlet and Violet: The player has a climactic battle with the AI version of Professor Sada in Scarlet or the AI version of Professor Turo in Violet. Each uses the respective mascot legendary (Koraidon in Scarlet, Miraidon in Violet) as their ace, which finally urges your own mascot legendary, which has just served as a Power-Up Mount until now, to switch into battle mode and fight its mirror.
- SaGa Frontier 2: The Remaster adds post-game fights against each of the Elemental Lords, all of whom now have a second form (a stronger version of the Egg's Element form).
- Shadow Hearts: Covenant: The Director's Cut version of the game adds in a {{Superboss} called Shichifukujin, who is located in the Sea of Woods. Their total HP is triple that of the Final Boss, and their attacks allow them to inflict every type of status effect in the game and dispel status buffs.
- Shin Megami Tensei:
- Shin Megami Tensei III: Nocturne: In the Maniax version, which was the basis of the localisation, a number of new bosses are added. The Fiend race of demons are added as a set of bosses who guard the Menorahs note , which are items used to unlock the Labyrinth of Amala (and by extension the True Demon Route), in which you can fight the series mainstays Beelzebub and Metatron. As part of the expanded story, Dante from Devil May Cry makes a guest appearance as a Recurring Boss (and later Optional Party Member). In the later Chronicle version, which became the basis of the HD remaster, the license for Dante had expired, so Raidou from Raidou Kuzunoha vs. The Soulless Army replaces him; the HD remaster allows you to have both characters note but not at the same time.
- Shin Megami Tensei: Strange Journey: The Redux version adds in the Womb of Grief, which adds a Superboss at the end of each floor. One of them Alex, is key to unlocking the New Law/Neutral/Chaos endings which involve defeating the True Final Boss.
- Skies of Arcadia: The re-release on Gamecube adds new optional boss fights for bounties and as a lengthy sidequest.
- Super Mario RPG: The Nintendo Switch version adds in post-game rematches against Belome, Booster, Cake, Johnny, Jinx, and Punchinello. Defeating them and Culex allows you to have a rematch against Culex, who has ascended to a stronger form called Culex 3D.
- Undertale: Mad Mew Mew is an optional miniboss who can only be fought in the Nintendo Switch version of the game.
- Gradius series:
- Life Force's NES port, in its new stages that replace the asteroid field/kidney stone stages, has Giga, a giant skull, and Tutankhamenattack, a giant pharaoh death mask. Additionally, the Final Boss, Zelos Force, is accompanied by a giant snake that must also be destroyed to complete the game, failing to do so sends the player back to Stage 4.
- Gradius III's SNES port omits a few arcade bosses, namely Dogas, Gregol, Wyvern, Lizard Core, and the Legacy Boss Battle Tetran, but adds Beacon as the boss of its exclusive High Speed Stage, and changes the Shadow Gear in the Fortress Stage from a Hold the Line sequence to a proper boss.
- Tactics Ogre: Balxephon and Volaq were The Unfought in the original version of the game, but can be fought in the PSP version where the former is one part of a Dual Boss in Chapter 3, and the latter is an Optional Boss fight in Chapter 4.
- The remake of Tsukihime had Nrvnqsr (Nero) Chaos, a prominent villain from the original VN, Adapted Out and replaced with Vlov Arkhangel, a vampire with ice powers.

