At the start of each level tap / click on the screen to get Otto going then Tap / Click anywhere on the screen to make Otto turn (left of course).
Get Otto the otter home! That would be easy except for the fact that Otto can only turn left. You'll need to think and use quick reflexes to get Otto home in each of the 56 levels. Get Otto to bounce off of beach balls and mix-up markers to (gasp!) make Otto turn in the not left direction.