This is CLI "Brain Games" application for Node.js, which will help you to develop mathematical possibilities by playing in games. Set consist of 6 games:

1. brain-balance
2. brain-calc
3. brain-even
4. brain-gcd
5. brain-prime
6. brain-progression

Every game has 3 rounds. If you give right answer on any offered question it lets you go to the next round otherwise game over, which reports message with correct answer. To restart you have to enter again brain-games.

npm install -g  brain-games-by-dmsedov

In terminal you have to simply type next:
brain-games