Your playing character is a wolf who sits outside a hen house. The wolf must catch with his hat all the eggs that fall out of the side of the hen house. Each "saved" egg gives you one point. You can move the wolf and the hat with A, Z, K and M key. The game ends when you make 3 or more mistakes. One dropped egg counts as a half mistake when a rooster is sitting at the top left corner and a full mistake when the rooster is not.
All the errors are cleared when you reach 200 points.