Save the kids Pushmo!
The premise of the game is to free the child trapped at top of the block maze. In order to unlock the blocks, you pull them out or push them out to create steps to jump to top. There is a limit to how far you can push out and there are ladders and buttons in the higher levels. When you get to the top and you have saved the kid and toss him/her with joy. Fun times.
This is a great game to work out your spatial intelligence. A much neglected part of our brain especially if you are like me staring at a computer screen all day.