Bubble Trouble: Golly! Ghost! 2/Gameplay

Controls

 * Lightgun: Use the lightgun to direct your gunsight around the screen; player 1 is given the codename of "ZIP" (and his score is displayed on the left side of the screen), and player 2 is given the codename of "ZAP" (and his score is on that right side). Squeeze the trigger to fire a shot from the gun.
 * Start Button: Press to start a one or two player game.

Normal creatures
There are now eight types of normal creatures; from left to right: Tuna, Snapper, Balloon Pop, Tosu, Unagi, Pirahna and Mr. Jow. 1 point.

Bonus creatures
There are now only four types of bonus creatures, which happen to be the original ghosts from this game's predecessor. From left to right: Blue Ghost, Yellow Ghost, Green Ghost and Red Ghost. 2-5 points.

Boss creatures
There are now five different boss creatures; from left to right: Boss Pirate, Boss Stone Idol, Boss Octopus, Boss Bubble Monster and Boss Water Ghost. Once defeated, the text "SCENE X CLEAR!" (X being the scene number) will appear on the screen. Additionally, Boss Stone Idol, Boss Octopus and Boss Bubble Monster will spawn three types of bonus enemies - Boulders, Octopi and Bubble Ghosts  - when defeated, which can be shot for 1 point each.

Bubbles
Shooting these small pockets of air will appear at random intervals in each scene, and have the chance of clearing the screen of all enemies; however they will usually pop with no effects to the game.