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Coins are used to buy blocks from the shop. After placing one on the ground, you open it to see what is inside. Sometimes the result is a creature you already own. Sometimes it adds something new to the collection. As more coins become available, better blocks start appearing in the shop.
Finding the same creature twice is not a bad thing.
Two matching Brainrots can be combined into a stronger version. The new creature earns more coins and takes the place of the originals. Because of this, duplicate creatures are often just as useful as new ones.
Many upgrades come from merging rather than finding something rare.
At the beginning, there are only a few Brainrots standing around. Later, the park starts looking crowded. Different sizes, rarities, and designs appear across the area. Some players focus on income, while others spend time trying to fill the collection with creatures they have not unlocked yet.
The game earns coins automatically, but there is also an active option.You can equip a bat and break boxes yourself. It is a simple activity, though many players use it to speed up progression while waiting for more coins.
WASD / Arrow Keys — Move
E — Place Block
Left Click — Interact or Break Boxes
G — Shop
F — Equip Bat
TAB — Brainrot Index
R — Rankings
ESC — Settings
Brainrot Park starts with a few creatures and a small amount of income. After enough blocks are opened and enough merges are completed, the park gradually fills with larger and rarer Brainrots.