2048
How to play
Swipe on a phone. Every move slides all the tiles as far as they go, and two tiles of the same number merge into one of double the value. A new tile appears after each move.
Get to 2048 and you have won, though nothing stops you carrying on.
Your best score is kept in this browser. Nothing is uploaded and there is no account.
The tiles climb from marble to the sea. Marble is the foundation, clean and solid. Turquoise is the water Greg goes to look at when things are hard, which is where the brand colour came from in the first place.
One Rule People Get Wrong
A row of four identical tiles does not collapse into one. Slide 2, 2, 2, 2 to the left and you get two 4s, not a single 8. Each tile may take part in only one merge per move, and the pair nearest the direction you pushed goes first.
That single rule is what makes the game a puzzle rather than an arithmetic exercise. It is also why a board can look crowded and still be fine, and why the corner strategy works: park your largest tile in a corner, keep one row feeding it, and never push in the direction that would move it.
More to Play With
The puzzle tools page has the solvers, which answer a question rather than set one: a pentomino solver, a polycube box fitter, a burr solver and more. If you prefer puzzles you can hold, they are all in mechanical puzzles.