Brain Games needs prompt to work correctly.
pip install prompt
pip install -i https://test.pypi.org/simple/ pborisovich94_brain_games==0.1.0

A random number is presented to player to guess if it is even. They should answer 'yes' or 'no'.

To play this game run:
brain-even

A random mathematical expression is presented to player to calculate it.

To play this game run:
brain-calc

Two random numbers is shown to player. Player must calculate and enter the greatest common divisor of these numbers.

To play this game run:
brain-gcd

The player is offered an arithmetic progression in which he needs to find the missing element.

To play this game run:
brain-progression

A random number is presented to player to guess if it is prime. They should answer 'yes' or 'no'.

To play this game run:
brain-prime