Piano Tile

Piano Tile starts in one click — a Hypercasual game with nothing to install and no account to make. It is built for touch, so a phone or a tablet is the natural place for it. Listed under arcade, casual, endless, hypercasual.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Free to play in the browser, with no install step between you and the first round.