Downhill Race is a fluffy racing game by Carina Pratsch and Philipp Erler. Up to 4 players in split-screen steer sheep through a rural area into the goal. This game is completely free and open source. It is run by a self-made game engine using OpenGl 3.3 with shadowmapping and volume rendering.
VolRendYo! is a program for visualization of volume data. It features a depth-of-field effect for a slice-based direct volume renderer.
Broken Magic is a graphics demo by Robin Melan and Philipp Erler. It features omni-directional shadow maps, deferred shading, volumetric rendering and depth of field in an own C++ OpenGl 3.3 rendering engine.