Mike Szczys from Hack a Day built this great low res 1 Pixel Pacman game. If you had fun playing video games from the 90s you would love this. It is a classic game of pac man built around a 32X32 RGB Pixel display and is powered by a Teensy 3.1.
 “The hardware and software running the Smartmatrix made the display portions of the project really simple. First off, the Teensy 3.1 is fast, running at 96MHz in this case. Second, it has Direct Memory Access (DMA) which [Louis] used in the Smartmatrix library. This means that driving the display takes almost no CPU time at all, leaving the rest for your own use. This example of a game is under-utilizing this power… it’s totally capable of full-motion video and calculating amazing visualizations on the fly.”