A new release of the game port Heretic for the DS. Heretic is a classic first person shooter created by Raven software. It is based off the Doom engine by Id software. New in this version :

This version potentially addresses the hang on”P_Init: Init game engine.”It adds no other features. If you have not had any problems, you do not need to upgrade.

http://heretic.drunkencoders.com/