OpenTyrian is a port of the classic DOS game Tyrian to C using SDL.

Changes:

Changed sound/music from 44100hz to 22050hz.
Changed detail level to 486 level.
Changed launcher script for use with Gmenu2x.
Compiled with latest version of hardware SDL.
Compiled with assembler versions of memcpy() and memset().

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,30,2421