2048 was created in 2014 by Italian developer Gabriele Cirulli over a single weekend. He wanted to practice JavaScript and built the game as an open-source clone of 1024, which itself derived from the mobile hit Threes. Cirulli pushed the code to GitHub with modest expectations โ and within four days it had gone viral worldwide.
The kicker: Cirulli publicly described the project as 'just a JavaScript exercise.' The game was forked, cloned, and adapted hundreds of times across platforms and languages. Today it stands as one of the most recognized digital puzzles ever made, available free in browsers everywhere and spawning themed variants swapping numbers for characters, animals, or emoji.