MathGame is a command-line game being built as a two-headed exercise. The first is in Python OO development, the second is in practicing basic arithmetic.
Download the source, navigate to directory and run
python3 MathGame.py
Remember your loved ones. This is just a game. Addiction is real. Press Ctrl+C or wait for your turn to expire and the game to end.
Please contribute, this is an exercise in software development and considering other points of view is a part of that. Open an issue on Github or just shout at me loud enough for me to hear. Maybe you can do a pull request, I'm not sure though.