Tap on a colored block to pick it. Slide the block in any of the four direction to cover the puzzle. Align the color of the block with the corresponding colored area in the maze. Finish each level by covering all the unfilled spaces with the correct colored blocks. Use strategy to slide blocks around hindrances. Advance to tougher levels with increasing maze designs. Retract your last move if you make a mistake by clicking the undo button. Reset the level if you get stuck to begin anew.