Unfoldit comes from Clifford Panos. Imagine a square piece of paper has been folded and some holes have been punched. Can you determine where the holes would be if the paper were unfolded? That's the object.
I solved all the 'easy' levels. 272 of them! I waited about a month for Clifford to upload the medium levels. Of which, there are some 500 levels! They're much tougher!
The graphics are outstanding. This game is a winner!