New to robotfindskitten? Check out the official site for the full scoop.

Thanks to the magic of cc65, robotfindskitten is available for a couple of popular 6502-based platforms. The source is available here.

I also made Nero and DiscJuggler images for the Dreamcast port; you can download them here.
A rewrite for the Atari 2600 is also in progress; a developer diary of sorts is available here.
I attempted to port rfk3d to use GLUT instead of Windows-specific OpenGL, but was not able to make it properly display text. If you want to take a crack at it, the source is here.
Commodore 64
Disk image
Apple ][
Disk image

Website and ports by Jeremy Penner. Bug me!