Zombie Hunter Uprising

Zombie Hunter Uprising is listed here under Arcade. There is no launcher and no install between you and it. Taps and swipes are the whole vocabulary — a phone plays it best. Tagged adventure, arcade, game, online, shoot ’em up.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. It costs nothing and asks for nothing: no registration, no download, no launcher.