Free HTML5 browser game

Planktons Pernicious Plot

Plankton's hypnotized jellyfish are taking over Bikini Bottom in the Plankton's Pernicious Plot game! The evil genius has built a Hypno-pod that turns jellyfish into his slaves. Therefore, SpongeBob must go on an adventure and destroy Plankton's machine to save the jelly creatures! Will you join him in his quest? Your role in this game is to help SpongeBob deactivate all the Hypno-pods before time runs out and Plankton's plan succeeds! The clock is ticking, and you must save the precious jellyfish from doom! Don't worry! SpongeBob is there to help you every step of the way!

Game description provided by GameMonetize.

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Current source controls: You will need your keyboard to save the jellyfish Here are your controls and how to use them - Right Left arrow keys Move around the map - Spacebar Up arrow key Jump onto platforms

Quick facts

Game details

Channel: Adventure Games
Subcategory: RPG Games
Provider: GameMonetize
Platform: Web Browser
Orientation: landscape
Updated: July 21, 2026

Optional third-party video

Game walkthrough

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About Planktons Pernicious Plot

Game description provided by GameMonetize.

How to play

You will need your keyboard to save the jellyfish Here are your controls and how to use them - Right Left arrow keys Move around the map - Spacebar Up arrow key Jump onto platforms

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