Happy Feet is probably the worst and most simplistic game to be ever made for the PC.
First of all, there is neither sense of humoir, nor a sort of fun in Happy feet. Each and every level of the game is not only boring till death, but also the difficulty levels of the game do exist only for little children, as for the big guys the word difficulty means completely nothing in this game. To make matters worse, there is a great sense of repetitiveness in the game, as all the levels are about the same. The only funny levels are the ones where you sled down ice hills. You can unlock stuff from the movie which is not needed and is not motivating at all. And there is a cursed multiplayer which even more boring than the story mode.
Happy Feet is a game you should avoid at all costs, and its catastrophic gameplay will bring you the ultimate letdown.