I don't normally have the patience for these types of games, but Jumper 3 was fun enough to keep me playing until the end. In it you control Ogmo through over 50 stages, switching between five separate forms with different abilities. For an additional challenge you can try to collect the coins and medals. I really liked the simple graphics and the music, as well as the general atmosphere created by the story and setting.
I personally would have enjoyed this game more if the controls were a little easier. The way Ogmo accelerates when moving horizontally makes it hard to predict his movement, and each of Ogmo's forms have different physics properties which make it even more difficult to learn. But overall it's a very polished experience.