ParkyDR has ported the rouglike game “Powder” over to the GP2x. The original Powder is available for PSP, GBA, NDS, WIN32 and Linux here: http://www.zincland.com/powder/index.php?pagename=about

The source code is available by now too.

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,46,2584