Rail Switch

Goal Send every cart to the stall that sells its fruit.

1. Carts with fruit roll down from the tunnel.
2. Tap a switch to flip it. The lit track shows where a cart will go.
3. A cart at the wrong stall puts out a lantern. No lanterns left, the round is over.
4. Two crates come coupled and split up. Flip the switch between them.
5. New stalls open as you go. Twelve good carts in a row light a lantern again.