The iPhone Cube is an open source multiplayer and single player first shooter game which built on an an entirely new and very unconventional engine.

“Cube is a landscape-style engine that pretends to be an indoor FPS engine, which combines very high precision dynamic occlusion culling with a form of geometric mipmapping on the whole world for dynamic LOD for configurable fps & graphic detail on most machines.”

Video after the break.

[via Techeblog]