From Playdate Community Wiki
Description from itch.io page:
Pop all the lurky, swimming one-eyed fishes! Pop-pop is a relaxing and simple shooter for they Playdate console.
Bubbles with a "?" mark in them gives you either a rocket, an extra life or some extra score
- Rocket - when you get a rocket a little icon will appear beneath your health bar indicating how many rockets you got left. Shot a rocket with A button or with the down button.
- Bouncing projectiles - You will hear a "clink" sound when you get the bouncing projectiles. This will cause your projectiles to bounce off of the walls twice, allowing the shoots you missed to hit something!