Juggling Chain

Everything orbits the centre of the screen, and your single button flips the direction of every ball at once. Obstacles cross the arena on their own schedule, so the tap that saves one ball is the tap that swings another straight into something.

A destroyed ball comes back after a while, which keeps a bad moment from ending the run outright — but the game is over the instant all three are gone at the same time.

From Kenta Cho’s MIT-licensed crisp-game-lib collection.