It is Halloween and the Dirty Bubble is Trick-or-Treating for SpongeBob. Avoid the Dirty Bubble and hit him with candy to escape his trap. Use the arrow keys to navigate, the down arrow key to drop through floors, and the space bar to throw candy. Each character has a health meter. The health meter shows the amount of hits taken. Once the health meter is full the player is defeated. Fill the Dirty Bubble's health meter to go to the next level. If your health meter is full you lose. You can also use power-ups to help you. In levels 4-6, the bottom of the screen has a big gap. If the player falls down the gap, you lose. The game ends when you get defeated, fall down a gap, or complete level 6.
The Krabby Patty power-up reduces hits, the dark green candy power-up adds more damage to the Dirty Bubble's health meter, and the pirate hat power-up lets you wear pirate hat and become invincible for a limited time.
The Dirty Bubble has 3 attacks. First attack: Shoots red candy. Second attack: Shoots Dirty Bubble balls. Third attack: Leaves dirty gas.