Patent ID: 8328613

Claim:
A game apparatus comprising: a light source; a housing disposed around the light source wherein the housing is transparent to a range of wavelengths from the light source and wherein the housing is composed of a low distortion scratch-resistant material; a game board wherein the housing is removably mountable at the center of the game board; a convex mirror disposed inside the housing such that light is reflected from the light source, off the convex mirror, through the housing, and onto the game board; one or more retro-reflective elements placed on the game board that receive light emanated from the light source and reflected off of the convex mirror and reflect said light along the path from which the light was received; a sensor disposed inside the housing that receives light reflected from the one or more retro-reflective elements, that senses increases and decreases in the intensity of the reflected light, and that signals changes in the intensity of the reflected light greater than or equal to a predefined level; a data store for storing the locations of the reflective elements and other game-related data; and a processor responsive to signals from the sensor and the data in the data store.