Stacks free online
Stacks is a merge puzzle in the 2048 family: every swipe slides all tiles in one direction, equal tiles collide and double, and a new tile drops in after each move. Run out of moves and the run ends. Simple rules, real depth.
It's the perfect ninety-second desk game that quietly becomes a twenty-minute one. Three free runs a day per board; a quarter undoes a catastrophic swipe, and two quarters continue a dead board by clearing the smallest tiles.
The daily challenge seeds the tile sequence identically for everyone — same drops, same order, leaderboard by score.
Difficulty modes
Classic (4×4)
The standard 4×4 board. Slide tiles in four directions; equal tiles merge and double. Reaching 2048 is the badge, but the game keeps going — 4096 and beyond separate the corner-disciplined from the swipe-happy.
Big board (5×5)
A 5×5 board with more room to breathe and much bigger ceilings. The extra column changes everything: longer chains are possible, but board corruption is harder to repair. High scores here run several times the classic board.
Frequently asked questions
Is Stacks the same as 2048?
It's the same family of sliding merge puzzle — the 2048 mechanic was released open source and has hundreds of variants. Stacks is our take, with classic 4×4 and big 5×5 boards, daily challenges, and arcade-style continues.
What's the best 2048-style strategy?
Anchor your largest tile in one corner and never move it. Build a descending chain along one edge, avoid the swipe direction that dislodges your corner, and never make a move that doesn't merge or set up a merge.
Is reaching 2048 hard?
With corner discipline, most players reach 2048 within their first days of deliberate play. The real game starts after: 4096 requires consistency and 8192 requires near-perfect play with some luck.
How does the continue work?
When no moves remain, 2 quarters clears the smallest tiles from the board, opening space to keep the run — and your score — alive.
Why did my high run suddenly die?
Almost always one idle or panic swipe that pulled the big tile out of its corner. The board rarely recovers once large tiles sit in the middle — that's the moment the 1-quarter undo is for.
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