About 512
512 is the sliding number puzzle, rebuilt in neon for a single screen. A four-by-four board starts with two tiles — usually a pair of 2s, occasionally a 4. Swipe in any direction and every tile slides as far as it can go; when two tiles of the same value collide they fuse into one tile worth double. Each merge adds that new value to your score, and a fresh tile appears in one of the empty cells.
There is no clock and no move limit. The only thing that ends a run is a full board with no matching neighbours left, so every game is a slow argument between keeping your biggest tile in a corner and leaving yourself somewhere to move. Reach the 512 tile and the game offers a choice: keep playing to push the score higher, or start fresh. Your best score is kept in this browser, including across reloads.
How to play
- Swipe with a finger, drag with the mouse, or use the arrow keys / WASD to slide all tiles in one direction.
- Two tiles showing the same number merge into one tile with double the value, adding that value to your score.
- Every move that changes the board spawns one new tile, usually a 2 and sometimes a 4.
- Build the 512 tile to win. You can then keep playing, or start a new board from the New Game button.
Tips & tricks
- Pick one corner for your largest tile and keep it there — constantly switching direction is the fastest way to bury a big tile in the middle.
- Keep your highest values along a single edge in descending order, so merges always have somewhere to collapse into.
- A move that does not change the board costs nothing and spawns no tile, so it is safe to test directions when the board looks stuck.
Scoring & progression
- Each merge adds the value of the new tile to your score — two 2s give 4 points, two 64s give 128, and so on.
- Building the tile ladder 2 → 4 → 8 → 16 → 32 → 64 → 128 → 256 → 512 is the progression system; there is no separate level or experience bar.
- Reaching 512 counts as a win for the portal progress system. You may keep playing for a higher score, and the best score is stored locally.
- A slide that changes nothing spawns no tile and costs no points, so testing a direction is free.
Stages & bosses
- Opening board — two starting tiles, usually 2 and 2, occasionally a 4.
- Low ladder — 2 through 32, where the board still has room to recover from a mistake.
- Crowded board — 64 through 256, where a single bad column can block all four directions.
- The 512 tile — the win condition, after which the run continues for score only.
- There are no bosses or timed stages. Difficulty comes entirely from the new tile spawned after each effective move.
Frequently asked questions
What happens when I reach 512?
You win the run and can choose to keep playing for a higher score or start a new game. Reaching 512 also counts as a win for your Zaki Games progress.
Is there a timer or a move limit?
No. 512 has no clock and unlimited moves. A run ends only when the board is full and no two neighbouring tiles can be merged.
Is my best score saved?
Yes. The highest score is stored in this browser and shown next to your current score. Clearing browser data or switching devices resets it.
Can I undo a move?
No. There is no undo button, which is part of the puzzle: every slide is final. You can start a fresh board at any time with the New Game button or the R key.
Why does a new 2 appear after every move?
Every slide that changes the board spawns one new tile in an empty cell — usually a 2, sometimes a 4. This keeps the board under pressure; without new tiles the grid would empty out after a few merges. A slide that moves nothing spawns no tile at all.
Version history
- November 13, 2026 — Guide expanded with the merge scoring formula, the full tile ladder and the 512 win condition. No gameplay change.
- Current build — 4×4 board, keyboard/WASD/swipe input, 512 win with continue option, local best score, R to restart, portal result reporting.
Play tips
Stay safe out there — no games while driving or crossing the street.
Mobile stuck on the PC version? In Chrome: ⋮ menu → uncheck "Desktop site" → refresh.
For best compatibility, use Chrome or Edge.
No full-screen, no sound, or a Unity not supported message? Use a tablet or PC.
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Right-click problems on Edge? Turn off "Enable mouse gestures" at edge://settings/mouseGesture.