Biomes in Plants Vs Brainrots is a progression mechanic that was added to the game with the Storyline Update. There are multiple biomes in Plants Vs Brainrots that players can unlock. Each biome has its own Secret brainrots that you need to catch to complete certain in-game objectives related to progression, fusion, Rebirths, and more. This Plants Vs Brainrots Biome guide will tell you everything you need to know about this mechanic.
