How to play
Tap a bright edge cell to launch a marble. Normal arrows turn clockwise after the marble leaves. The small arrow at the lower left previews the next state. Guide the marble to its target exit.
Think one move ahead
It may look random, but every route is determined. This rotor-router puzzle lets each marble change the route for the next.
Each direction has its own color. The large central arrow is the current target; the smaller faded arrow shows the next.
120 stages and custom challenges
Learn the controls and discover new mechanics as you progress. Replay cleared stages for more stars and personal bests, or share a seeded custom puzzle with a friend. Progress is stored in your current browser.