I put the code for Caves of Mars on github: https://github.com/cwarren/cavesofmars
I've added several more things since the end of the jam, and expect to continue working on this for a while. The experience curve of the game has been seriously tweaked, and you can do a lot more with fungus (fungus like corpses). I also fixed a bug where throwing things wasn't possible when using the laptop key bindings.
Play time of a winning run is about 60-90 minutes.