Rotate to Escape

Rotate to Escape is one of the Puzzle games here that asks for no download and no sign-up. Taps and swipes are the whole vocabulary — a phone plays it best. Catalogued as best games, brain, escape, ipad, iphone.

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.