This is some ancient code that was intended to become a Tetris clone for the Game Boy Advance. In those dark ages I didn't even know VCSs, so this is the most recent code I found.
It was mostly built around TONC, which as far as I remember is a set of tools, libraries and a book that could be used to develop things on the GBA.
I promise I'll try to build this by hand later. For now, there's a built bin that runs on Visual Boy Advance (and probably some other emulators).