PRISM: LIGHT THE WAY NINTENDO DS

Prism: Light the Way is a cute puzzle game that takes place in a black hole. It's based on the idea that black holes are the natural habitat of quantum beings called Glowbos that feed on light. When the light is blocked by a space monster, the Glowbos face starvation until a race of light-emitting creatures called Bulboids (effectively controlled by the player) arrive to save them.

The basic principle of the game is to bend rays of light (which always travel at right angles) so that they hit color-coded targets at the edge of the playing area (an 8x8 grid). To do this, the player can move any of the pieces (bulboids, mirrors, color filters, prisms, etc.) on the grid. Pieces can be slid to any open space on the board (so you don't have to shuffle pieces as you would with a sliding tile puzzle) but cannot be rotated.

The game features a "time attack" arcade mode (where the player must clear randomly generated levels to earn extra time), a free play mode which removes the timer, a puzzle mode where the player must complete hand-crafted levels. increasingly difficult hands, and (in the PC version only) a rapid-fire gallery mode where targets and game pieces are dropped onto the board intermittently, and the player must constantly rearrange the pieces to hit all the targets before they become critical.