First-person shooter featuring a horror setting brought to life by a powerful graphics engine and some of the nastiest level bosses ever seen. The main character is stranded in a place between Heaven and Hell -- the time of judgment is at hand. As a pawn in an unholy war, players battle hordes of monsters while collecting souls. For every 100 souls he can morph into a powerful possessed creature.

Played across more than 20 completely different levels, the game is powered by the proprietary 3D "PAIN Engine" and the Havok 2.0 physics engine, allowing for interactive environments and rag-doll physics. The Gold Edition includes both the original Painkiller and its expansion pack, Battle out of Hell.