The popular Indie platformer VVVVVV is now open source and available on GitHub. Terry Cavanagh, the creator of the game, detailed the process of porting the original Adobe Flash release to C++ for release on PC on his blog. It's an entertaining read, especially for fans of the game.
https://www.notebookcheck.net/Indie-smash-hit-VVVVVV-is-now-open-source.450175.0.html