Are there any more specifics to this requirement? Does the game binary need to be downloadable from GitHub too, or is it purely for the source code being publicly accessible?
I'm worried that you won't be able to compile my game, just because it's a C++ project with dependencies (Chipmunk 2D for physics, SDL2/SDL_mixer/SDL_image for sound and graphics, etc.) and I'm cross-compiling it for Windows from Linux. Will you reach out if you have trouble building my game, or it just an instant disqualification?