Swipe your finger to move. Tap U to undo, and tap the circle button to restart a level.

You have three colors to control: cyan, magenta, and yellow. Your goal is to get the boxes of the same color into the outline that matches with their color. To change colors, tap the color you want to control.

Sometimes you'll need to push blocks of different colors. Keep an eye on the hints that show you which colors can move which blocks. Can you clear all the levels?