Tilt the device to move the spider, draw 4 lines of the same color to make a rectangle around a garbage of the current category to capture it to score. Tap bottom buttons to change the category. Tap anywhere on the screen to toggle the trail on to capture or off to erase. If the spider is hit by a garbage, the game fails.

In Hard mode, If the strength is out, the game fails. Keep capturing water to add strength.