Foldology 3 - Impossible Folds is the expert-level sequel to Foldology and Foldology 2. It is meant for those who have finished both and are eager for a greater challenge. While those two versions include some challenging puzzles at the end, all of the puzzles in Foldology 3 are at the highest difficulty level. There are only 60 puzzles in this version, but 2 copies of each one. You can use the extra copy for yourself if your first attempt to solve the puzzle wears out the paper. Another exciting thing you can do is give the extra puzzle to a friend and race to see who can solve it first!