The Game of Light is a great Arduino project that has a 64 pixel X 64 pixel RG LED matrix. This is a project that I especially like because it plays retro games!
The graphics are quite a bit better than any LED game that I have made (infact, it’s much higher resolution than anything I have made!) Check out the four player snake game towards the end – loads of fun for the whole family!
Here’s the youtube clip of the project in action: