(run those in command prompt/cmt/terminal)
To start to build games with You perfrom a:
pip install pygame
Learn all the above commands on terminal. Make sure to use pip3, because in linux pip refers for python2 and pip3 refers to python3.
Install these too -
pip3 install pygame
If you encounter any problems feel free to open a new issue. Before that check other closed issues and check if your issue matches with any older issues.