GatherSpace

Turn every swipe into a thoughtful decision with a focused offline number puzzle. Move all tiles together across a 4×4 board. Matching neighbors merge into a stronger tile, while each new tile asks you to preserve just enough space for the next move. Every move is calculated fairly: empty swipes do not create tiles, and a tile can merge only once during a turn. Classic mode is an open-ended pursuit of a higher tile and a better score. Challenge chapters use repeatable starting positions and clear goals, so progress depends on planning rather than hidden network services or unpredictable events. The round view keeps score, highest tile, effective moves, and merge chains visible. A single Undo restores the previous board, score, and random sequence. Pause whenever you need to study the spaces. When the board is closed, the summary shows your highest tile, moves, score, and best merge chain. The app also includes a compact play guide, local statistics, adjustable swipe sensitivity, sound feedback, assistive tile texture, and a clear privacy statement. Your board and preferences stay on this device. No account, connection, advertising, payment, or leaderboard is required.