← Math
Number Merge
Match. Merge. Build the target!
Build 4
Puzzle 1 of 3Moves: 0
Drag matching numbers together.
Or tap one, then its match. 1 + 1 → 2
How to merge
Any two equal numbers can merge, even across the board. Their sum stays where you drop it. Empty spaces cannot receive tiles.
Keyboard: Tab to a tile and press Enter or Space to select it. Tab to a matching tile and press Enter or Space again to merge. Escape clears your selection or cancels a drag.
Only successful merges count as moves. Undo lets you retrace every move.