Outcast is an action-adventure released in 1999 by Belgian developer Appeal. It is a remarkable game for various reasons. It uses a combination of voxels and polygons to create a number of lush, beautiful environments while bosting effects such as bump-mapping, anti-aliasing, depth of field and character shadows without relying on hardware-acceleration. It also features full voice-acting and a fantastic soundtrack performed by the Moscow Symphony Orchestra which you can download here. Another impressive aspect of Outcast is the advanced A.I. NPCs move around, do their work, talk to each other or, when they are bored, start smoking or doing push-ups. In combat, enemies can put up quite a fight. They seek cover or try to suround you and attack you from the back. All these things combined help to create the illusion of a living and breathing alien world and make Outcast a very beautiful and immersive game.