Use the arrow keys (or on-screen buttons) to move the selector, then press Z to rotate counter-clockwise or X to rotate clockwise. Get 4 matching colors in a 2×2 square and they vanish. Clear the entire board to win.

During early development the database is reset periodically — sometimes without warning. If your scores or username are gone, that's why. This will stop happening once the game is out of early development.

Every day at midnight UTC, a new shared board is generated from a deterministic seed. Everyone in the world plays the same board. Your best time and fewest-moves score are recorded separately — you can submit as many times as you like and only your best result counts.

Same idea as the Daily Puzzle but the board resets every hour. Good for a quick ranked game without waiting until tomorrow.

In 4-Player each person owns one color and races to eliminate it. In 2-Player each person owns two colors — it's a slower, more strategic game because you're managing twice as many blocks. Both modes are real-time and use a private lobby code to invite a specific opponent.

Click 2P or 4P in the nav, then click "Create Match". Share the 6-character code with your friend. They click the same mode, choose "Join", and enter the code. Once all players are in the lobby and click Ready, the game starts.

Open Settings and scroll to Account Transfer. Copy your Account ID, then on the new device open Settings and paste it into the Import field. Your username and leaderboard history will follow the ID.

Yes. Switch to Drag mode in Settings for the best mobile experience — tap and drag a block in any direction to rotate the 2×2 around it. The classic arrow-button controls also work on touchscreens.

Open Settings and choose a Color Mode. Deuteranopia, Protanopia, and Tritanopia presets swap the four game colors for palettes that are distinguishable under each condition.

Yes. Use the Feedback button to get in touch.