Bring a tree back to life by solving 30 increasingly challenging puzzles! Place various tools on the track so that the continuously moving element collects all of the stars and reaches the exit. Arrows will set the direction that the element moves in and pills will change its elemental state. Gateways can only be passed through by the corresponding element. If you have a switch in your inventory, you can place it in the element's path to change the state of a gateway. In some levels, the track is disconnected, and you must use teleporters to guide the element to the exit.