Not cross-platform, but I'm reminded of the kkrieger game for Windows which was a 96k FPS game that looked visually impressive for the time.

https://web.archive.org/web/20100304155706/http://www.thepro...

From that link: Still works on modern PCs! Was able to DL and launch.

The source code is available as well: https://github.com/jaromil/kkrieger-werkkzeug3