Original game, where the bird plays little games of joining colors to help the cow to bring the bottle safe to destination. If you signal at the bottom a group of at least 3 balls of the same color, the bird will switch to this color; when the bird has one color you can add or remove blocks of this color on the way of the cow. And also you can fight enemies of this color. For example, if the bird is red, then you can add or remove red blocks and fight the red enemies. The other available colors are yellow, green and blue. By adding blocks in the holes and removing the blocks in the walls you'll help the cow to reach the end. You can also help her to go up and down one floor when it's necessary.
Click on a group of at least 3 balls of the same color on the bottom part of the game, to give color to the bird. When the bird has a color, click in an empty block space of this color to fill it; or click on a filled block to empty it; or click on an enemy of this color to make him go out of the way. If you want that the cow goes up or down a floor, drag and drop it in the direction you want.