if yall are interested, there is Shift 2 and 3. its way more involved, with unlocking doors and gravity pulls, etc. and Shift 3 has some code you have to find to win.
it's kinda like an intellectual yet dark version of Super Mario. i spent the last hour on Shift 3 and i havent had this much fun with a PC game since Weff Riddles. but the Mel Gibson thing was kinda weird.
http://www.addictinggames.com/shift2.html
http://www.addictinggames.com/shift3.html
something weird about the resolution of the website makes the game not fit all in one screen, so you may or may not have to hit F11 (full screen) to avoid scrolling back and forth with each move.