'Brain Games' is a set of five console games for training cognitive skills using math. In each game the player should answer questions. After three correct answers, the game is considered to be completed. Wrong answers end the game.

• Clone this repository
• Install NVM and Node.js
• Run these commands

$ make install
$ make publish
$ npm link

Guess if the number is even

Calculate arithmetic expressions

Guess the greatest common divisor

Guess if the number is prime

Write a missed number in a sequence of numbers