An electronic game having a field of play arranged in an array as a key board of individually operable key pad switches defining array positions on which one or more players attempt to discover a hidden maze path from a designated starting point. A player wins or completes the game when the maze path...http://www.google.es/patents/US4240638?utm_source=gb-gplus-sharePatente US4240638 - Microprocessor controlled game apparatus
