I love that one-- really cool. I am embarrassed to say that on my first try I only got to level 8. I need to try again.
--Jason "did anyone from here ever sign up for http://games.king.com/" Evans
http://www.chainfactor.com/
First there is the game itself. But then occasionally you'll get these "error codes" displayed on screen, which are hints for you to find the code to unlock some tools in power mode.