A student group in Poland executed a series of projects where they used the lights in their dorm room to create awesomeness. In the above video you can see a game of Snake and a bit of Pong at the very end. Their YouTube channel has several other videos, including this James Bond video:

There have been several examples of students using the same technique to create massive games of Tetris. Here’s a video a Russian group that pulled it off:

And don’t forget Improv Everywhere‘s mission Look Up More that put humans in department store windows: