Pomni Circus Ball Rush

Browser Hypercasual: Pomni Circus Ball Rush needs a tab and nothing else. Taps and swipes are the whole vocabulary — a phone plays it best. Listed under arcade, avoid, collecting, digital circus, html5.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Everything runs client-side, so there is nothing to set up before you start.