Just a test to try out the capabilities.
There are no controls at the moment so the game just plays itself.
Nice! I like how the boxes move to the side slightly when they're bumped, it's a nice little addition. This would make a cute screensaver type program if you spawned in a new box whenever one was destroyed.
Reminds me of those old DVD screensavers. You should add some eye candy and a congratulatory jingle whenever it hits the corner of the screen.