Brigade is an experimental physically-based renderer for games. Images are rendered using path tracing, approximating the color of each pixel by tracing a number of paths that connect the camera and light sources, via one or more pixels. See this page on wikipedia for more information: http://en.wikipedia.org/wiki/Path_tracing. Brigade has been used for a number of student projects at the Academy of Digital Entertainment of the NHTV University of Applied Sciences in Breda, The Netherlands. Brigade can be used for games, as well as scientific visualization and architectural walkthroughs.