The switching of different animals to navigate throughout the realm is both challenging and fun. The searching for gold pieces is a bit of a chore, but required for the later stages of the game. But trading rainbow drops for treasure location does help quite a bit. Quite handy to be able to reach save points, so you don't have to start at the beginning of the stage. The difficulty tends to be hard at the start, then gets a little easier, then harder again. Overall, very happy with the purchase.
