Motherload

If you ask me, "What did you do after the exam?"

I will say, "This one."

http://www.xgenstudios.com/play/motherload

Really addictive. Can't even stop and go toilet.

Played for 5 hours. Just can't resist.

One advice: Just try to go as bottom as you can.

Once you reached the bottommost, something strange and fun will happen.