alt Hacker NewsI've been jealous of the work antithesis is doing and support you in spirit; the world needs deterministic, tested software.
If you want a challenging open source deterministic game to test, may I suggest Beyond All Reason, powered by the Spring / Recoil engine? It's an RTS game that's been in various incarnations of development for 20+ years. (Disclosure: I'm an occasional code contributor to the project).
Oh man, Beyond All Reason would be a killer demo. We are actually testing another RTS as we speak, but I won't spoil it for you :) Look forward to a really epic post coming soon.