A puzzle game from Eidos that revolves around the manipulation of light to solve the puzzles. Glowbos rely on light in order to survive, and filter it through to other dimensions for this purpose. But now a Star-Beast has arrived and is absorbing all the light, putting the very survival of the Glowbo at risk. The Bulboids, fearing that the Glowbo may become extinct, rush to their aid.
You must direct light beams into the Glowbos to feed them. This is done by placing the light emitting Bluboids and then manipulating the resulting light through a variety of items, like mirrors, filter blocks and t-splitters. Light beams must be the same colour as the Glowbo being fed as well. Prism contains 130 set puzzles in addition to a never-ending Infinity mode and multiplayer support.