Update: It looks like M.A.R.S. is now on the official repo ^_^ , so it's useless to maintain this one.
After spending the last hours spewing commands without direction I was able to setup a Debian repo, packaging M.A.R.S. and uploading it, the idea is to make a compilation of libre games which aren't on the official repo (I'd try to send it there but I lack the constancy to mantain it).
And seems a good time to stop for today...
deb http://codigoparallevar.com/debian/ unstable/$(ARCH)/ deb-src http://codigoparallevar.com/debian/ unstable/source/