Here's my open-source port for Redneck Rampage series, based on Eduke32. Keep in mind that it's a work in progress, so there are known bugs/missing features.

Controls: D-PAD - move forward/backward and strafe
Mouse - look around
A - open, X - crouch, Y - jump
Right shoulder button - shoot

The game runs both using software render and OpenGL, with comparable speed and a unique set of bugs proper to each mode =) Seriously, software render is the most stable.

Discussion topic:
http://boards.openpandora.org/topic/16205-redneck-rampage-possible-on-openpandora/

PS. you need original game data to run eRampage. Check out readme files in the appdata folder for installation hints. eRampage supports RR, RRRA and Route66. Each game can be selected via the startup dialog.