Shadow Samurai Ninja

An Arcade game that plays in the browser: Shadow Samurai Ninja starts on the click and keeps its progress there. Taps and swipes are the whole vocabulary — a phone plays it best. Its tags here are action, adventure, arcade.

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.