: a Moat crossing III,,,,,,: the last straw!

Singleplayer Laser Emitter Button Weighted Cube Weighted Cube Dropper Cube Button Goo Glass Panel Laser Catcher Reflector Cube Reflector Cube Dropper Stairs Grating Piston Platform Tractor Beam Faith Plate Laser Field Sphere Button Edgeless Safety Cube Edgeless Safety Cube Dropper