Number Merge

How to play

1. Slide every tile at once: two equal tiles that meet fuse into one tile of their sum.
2. Press an arrow key (or WASD), drag with the mouse, or swipe to slide every tile in that direction.
3. Each merge adds the new tile's value to your score. After every move a new 2 or 4 drops into an empty cell.
4. The Next chip under the board shows whether that new tile will be a 2 or a 4.
5. Press U, Z or Backspace, or tap Undo, to spend an undo charge and take back your last move. You earn a charge every 10 merges (max 3); the bar on the Undo button shows your progress.
6. The run ends when no move is possible. In Timed mode it also ends when the 2-minute clock runs out.
7. Leave mid-run and press Continue on the menu to pick up exactly where you were.

Controls

Keyboard

• Arrow keys / WASD — slide tiles
• Mouse drag on the board — slide tiles
• U, Z or Backspace — undo (uses a charge)
• Esc — pause
• ? — how to play
• M — mute

Touch

• Swipe on the board — slide tiles
• Undo button — take back the last move
• Pause button — pause
• ? button — how to play