My friend Jenny sent me this link, and it's become very addicting. Supposedly it's a Fighter Pilot Exercise.
The object of the game is to simply survive by moving the red block around without getting hit by the blue blocks or touching the black perimeter walls. If you can survive longer than 18 seconds you are phenomenal. It's been said that the US Air Force uses this for fighter pilots.>They are expected to survive for at least 2 minutes.
My best time is 21 seconds so far. Dave said he got 27 seconds. Try it! But be warned, this is addicting!