Welcome to Hook A Brainrot! An obby world full of colours! Go in a unique monster hunt! Race the rising, uncontrollable tsunamis, using your grappling hook to trap strange creatures.
Your mission: throw your hook over wide landscapes to catch creatures called 'Brainrots' and bring them back to your base to construct an enormous passive income empire.

Every time your hook latches onto a creature, a tsunami is triggered, rushing toward that very spot. You must pull hard—relying on your character’s raw muscle power—to drag the creature to the "Safe Zone" before the disaster strikes. Once rescued, these Brainrots are placed on pedestals at your base, where they continuously generate cash for you to reinvest.
The rarity of the creatures you catch depends entirely on your hook’s reach. You’ll start by snagging "Common" creatures, eventually progressing to "Advanced," "Legendary," and "Mythical" tiers. With enough reach and pulling power, you might even venture into the domain of the "Brainrot Gods" or get your hands on the game’s ultimate, rarest prize: the Tier 67 creature.
Use your earnings to unlock 10 levels of hook upgrades, extending your reach. To pull creatures in faster, you’ll need to build up your "Muscle Strength" by training on weight benches scattered throughout the game. Once you hit your limit, you can choose to "Rebirth"—resetting your progress in exchange for permanent stat boosts and a lucrative income multiplier. Don’t miss out on events that grant 2x Strength or 2x Grappling Hook Reach, making it much easier to hunt for rare creatures.
The game supports a two-player mode on a single keyboard. You and a friend will both appear in the same field, competing directly to see who has better aim with their grappling hook and who can reel in rare creatures faster—all while developing your own individual bases.
WASD: Move.
TAB / E: Throw grappling hook.
S: Reel in the grappling hook.
F: Train muscles.
E: Interact with the environment and menus.
Left Shift: Sprint.
Arrow Keys: Move.
U: Throw grappling hook.
Down Arrow: Reel in the grappling hook.
Right Shift: Train muscles.
O: Interact with the environment and menus.
K: Sprint.
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