I was a bit bored this weekend, so after the Tetrepetete port to Maemo 4 I've gone ahead and wrote a software renderer backend for my game chro.mono (and manually changed some C++11 constructs back to C++98 compatibility). It's obviously not as fancy as the WebGL version, but works playably fast. Stylus usage also helpful in some levels

chromono_1.0.2_maemo4.deb for N800/N810