You'll want to know what's in that treasure box, too.

I recently discovered Treasure Box, a “beautiful little flash game”:http://www.senggeng.com/wada/compe/main.html, and I could not help become engrossed in simple, stylish puzzles that it offers. The premise is straightforward: guide the bright, red ball through the various quirks, twists, and turns of this bizarre world to a well-hidden and mysterious treasure box.

http://en.wikipedia.org/wiki/Yellow_Submarine_(film)