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Brainrot Mouse

Rare pet

Brainrot Mouse is a limited Rare pet in Bubble Gum Simulator Infinity. It could be hatched from the Brainrot Egg at a 30% (1 in 3.33) chance while it was out, from 13 to 26 September 2025.

Hatching

EggChance
Brainrot Egg
Brainrot Egg		30%
FormChance per hatch
Brainrot Mouse
Normal		30%
Shiny Brainrot Mouse
Shiny		1 in 133
XL Brainrot Mouse
XL		1 in 250,000
Shiny XL Brainrot Mouse
Shiny XL		1 in 10 million

Base odds, before any boosts.

Forms

FormBubblesPearls
Brainrot Mouse
Normal		+100×15
Shiny Brainrot Mouse
Shiny		+150×22.5
XL Brainrot Mouse
XL		+250×37.5
Shiny XL Brainrot Mouse
Shiny XL		+375×56.25

History

  1. Update 20

    Added, hatching from the Brainrot Egg.

  2. Update 22

    Removed from the Brainrot Egg. Trading is now the only way to get one.

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CategoriesPetsRare pets

Sources: Bubble Gum Simulator Infinity, read from the game, Bgs-infinity Fandom wiki (CC BY-SA)