Rot Boxes (or Cubes) are the only way to catch wild Brainrots. Higher tier boxes improve catch rate and raise the level cap. Always carry the zone-correct box before hunting wild Brainrots.
Rot Box is the starter box. Cheap (31 coins) and good enough for the first few hours.
Silver Box extends the level cap to Level 15 and is the right call once you hit Player Level 3.
Gold Box at Level 6 is where the Grass Zone effectively tops out. Covers creatures up to Level 22.
Snowbox at Level 9 is the Ice Zone entry point and costs 681 coins.
Snowman Box bridges the mid Ice Zone gap between Snowbox and Miner Box.
Miner Box at 1,680 coins is the steepest single upgrade in the Ice Zone chain.
Frozen Box at Level 20 costs 2,250 coins or 140 Robux and handles the toughest Ice Zone encounters.
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