doomsday: doomsday (portable game engine) doomsday: doomsday: A portable game engine for classic first person shooters such as doomsday: DOOM, Heretic and Hexen. Lets you enjoy the original games using doomsday: modern technology, including high-resolution OpenGL graphics, 3D doomsday: models, and dynamic lighting effects. doomsday: doomsday: Homepage: http://dengine.net doomsday: doomsday: doomsday: