Magic Number 45

Magic Number 45 runs straight in the browser. It is filed under Puzzle, and it loads on the page you are reading. Designed around touch input, and comfortable on a small screen. Catalogued as 1 player, 2d, balance, best, kids.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Everything runs client-side, so there is nothing to set up before you start.