Cool! I hope you enjoy it. It’s such a heartful game and its battle mechanics add more depth to the formula.
Steam input is absolutely baller. I use it extensively with my Steam Controller. For FPS games, I have gyro aim activate while the right pad is touched.
The repo has source code and a brief writeup, including run instructions. It’s an x86 port from Atari Basic. Actually, since this video, a contributor cut it down to 483 bytes!