Bubble Master is a bubble-matching puzzle where you swap bubbles to form groups of three or more of the same colour. It's closer to a match-three than to a shooter — you're rearranging what's on the board rather than firing at it.
Levels give you a target to clear and a limited number of moves, so the puzzle is finding the swap that sets off the most in one go.
No — you swap bubbles that are already on the board to form matches, which makes it a match-three rather than a shooter.
Meet the objective within the move limit, usually by chaining matches low on the board so the settling triggers further pops.
Yes — tap or swipe. Nothing to install.