Maybe you did not know you can play GPS games on your favorite GPS device. some famous GPS product, like Garmin Nuvi, they have games funtions. you can download classic numbers games-Sudoku and card game-Solitaire for free. many GPS fans like to play GPS treasure hunting and puzzle games (Rock Slide,Crumble).usually these games are not free. it will charge you $5, or even more, when you download and play it.