Ken's Labyrinth is by Ken Silverman. Its a wolf3d clone where you control a guy trying to save his dog.
This is my port of a SDL/OpenGL port by someone else.
OPK:
http://pickle.gp2x.de/gcw/kenlab.opk
source code hosted here:
http://github.com/Pickle/Lab3dGLES
Thread : http://boards.dingoonity.org/gcw-games-and-homebrew/ken's-labyrinth/