The launcher is the primary interaction point in a Puzzle Bobble-style game. Below are the functional requirements to generate this feature:

: Display a secondary bubble near the launcher to show the player which color will be available after the current shot. This is a staple feature for strategic planning.

: Restrict the rotation so the launcher cannot fire downward or directly horizontal. Most installments limit the angle to roughly 180∘180 raised to the composed with power to keep the action moving upward.