2048 Original

Open 2048 Original and you are playing — a Puzzle game that runs on the page rather than beside it. It is built for touch, so a phone or a tablet is the natural place for it. Listed under brain, logic, math, number, puzzle.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Close the tab and come back later; the game is still one click away.