I did the first world with the Penguin falling in the hole. I got a bit frustrated as the penguin was not walking in a waddle. And the falling into the hole was frustrating too. But, after stepping away and calming down. I retraced my steps and made the penguin look like it's waddling and then I got to the correct method to make the penguin "fall" into the hole. I couldn't figure out how to tip the penguin over into the hole, but I got close enough. Then I toyed around with it and included some of the exercise questions about methods. After some initial frustrations, I got to really enjoy myself with my little world.