Bubble Pop Origin

Bubble Pop Origin is one of the Shooting games here that asks for no download and no sign-up. Designed around touch input, and comfortable on a small screen. Listed under animal, bubble, bubble shooter, hypercasual, match 3.

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.