Katharsis is a first person gothic novel game with Stealth and RPG elements, based on the DarkPlaces engine.
This Screenshots show some of the features of the Darkplaces engine, like:
*realtime lightning
*realtime lights with cubemaps
*bump-, specular- and offset-reliefmapping
*reflective and refractive water
more to follow
The maps are only for demonstration purposes and will not be included in the final game.