What is 2048?
A 4x4 board, a few numbered tiles and one rule. Slide everything in one direction, and any two tiles with the same number that bump into each other become one tile with their sum. After every move a new 2 (sometimes a 4) drops onto a free cell. Keep merging until a tile reads 2048. That's the entire game, and people have lost whole evenings to it since 2014.
The catch is space. The board fills up faster than you expect, and two careless swipes can wedge a big tile into the middle where nothing can reach it. Reaching 2048 is very doable once you have a system. Reaching 4096 or 8192 is where the bragging rights start. The score is the sum of every merge you make, so it keeps climbing long after the 2048 tile shows up.
How to play 2048 (and actually win)
On a computer use the arrow keys; WASD works as well. On a phone, swipe across the board. Each swipe pushes every tile as far as it can go in that direction. Tiles that meet an equal number merge, and a tile that has just merged won't merge again in the same move. The game ends when the board is full and no two neighbours match.
The method that gets most people to 2048 is the corner strategy. Pick a corner, usually bottom-right, and keep your biggest tile parked there. Use only three directions (down, right and left) and treat up as an emergency button. Fill the bottom row from right to left in descending order, say 1024, 512, 256, 128, so every new merge has a natural place to slide into. Don't swipe in the one direction that would pull the big tile out of its corner unless the alternative is losing right now.
Two habits help a lot. Think a move ahead about where the random new tile could land, and slow down once the board gets crowded. Ask anyone who plays seriously: the games that die usually die to a quick swipe that felt safe, not to bad luck.
Where 2048 came from
2048 was written in March 2014 by Gabriele Cirulli, a 19-year-old Italian developer, over a single weekend. He wasn't trying to invent a genre. The game openly borrows its mechanics from 1024 by Veewo Studio, which in turn grew out of Threes by Asher Vollmer. Cirulli put his version on GitHub under the MIT licence, and that one decision is why 2048 ended up everywhere: within a few weeks more than ten million people had played it, and clones with cupcakes, Doge and Fibonacci numbers appeared within days.
Cirulli refused to make money from it. He turned down ads, released free iOS and Android apps in May 2014 and said a few hundred dollars in donations was plenty. The Wall Street Journal called the game "Candy Crush for math geeks", universities used the source code in programming classes, and people started writing bots that could beat it on their own.
The version on this page runs Cirulli's original engine with the original tile physics, so it feels exactly the way you remember. What we added is a global leaderboard. Scores are saved automatically when a game ends, and the tables update within seconds.