GatherSpace

Move the whole board, make thoughtful merges, and keep space open for what comes next. This single-player number puzzle is designed for short, focused sessions and works offline. Swipe in any direction to move every tile toward an edge. Matching neighbors combine into a higher value, while each newly formed tile can merge only once per move. Play Classic to build your score and largest tile until no legal move remains. Or explore 50 reproducible challenge boards with target-tile goals, marked blocks to clear, and corner-space tasks with move limits. Every valid move can add a basic tile. An unchanged swipe does not. Use one-step undo to review a decision; the board, score, and deterministic tile sequence are restored together. Runs that use undo are recorded separately. Your active board, preferences, challenge progress, and statistics stay on your device. Adjust swipe sensitivity, motion, sound, theme, number size, and tile patterns to suit your play. A built-in 3 × 3 practice board demonstrates the movement and merge rules.