Liquid Sort

Liquid Sort runs straight in the browser. It is filed under Puzzle, and it loads on the page you are reading. Taps and swipes are the whole vocabulary — a phone plays it best. Catalogued as brain, color, html5, kids, mobile.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. It costs nothing and asks for nothing: no registration, no download, no launcher.