The Superhero League

The Superhero League is one of the Puzzle games here that asks for no download and no sign-up. It is built for touch, so a phone or a tablet is the natural place for it. Its tags here are endless, fun, killing.

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.