A co-op puzzle platformer. Stand on heads, hold the plates, push together — and get everybody through the door.
Every level ends when every hero is inside the exit door. Nobody can do it alone: you are each other's ladders, weights and door-stops.
Your hero wears the gold arrow. Signs in the first world explain each idea as you meet it.
Shown once on your first visit — the ? button opens it again any time.