2048 is a single-player online and mobile game created in March 2014 by 19-year-old Italian web developer Gabriele Cirulli, in which the objective is to slide numbered tiles on a grid to combine them and create a tile with the number 2048. It can be regarded as a type of sliding block puzzle, and is very similar to the Threes! app released a month earlier.
On a mobile device? If so, check out the web-based version at http://git.io/2048 or use an app like the ones listed below!
Another Version with More Features: