Steal a Brainrot Exist Count
How many of each brainrot exist — 61 counted, rarest first.
Source: Steal a Brainrot Wiki · counts recorded Jul 23, 2026 · 61 brainrots counted · 30 with a per-mutation breakdown
Exist counts change constantly — the in-game counter updates about once an hour. These are the last figures published by the wiki, not a live feed. For an exact number on a specific brainrot, the brainrot viewer in game is the authority. A “~” means the source published an approximation.
What is an exist count?
An exist count is how many copies of a brainrot exist across the whole game. Steal a Brainrot added them in Update 56: the Index shows a count on each brainrot, and the trade machine tags a 1 of 1 when something is the only one left. The counter refreshes roughly hourly.
Why do some counts show a range?
Brand-new secrets are sometimes so rare that the community can only bracket them — the wiki will say something like “possibly 3-50 exist”. Where that is all the source gives, that is what we show. We do not turn a range into a single number to make the table look tidier.
What is the rarest brainrot in Steal a Brainrot?
Of the counts published so far, Arcadragon has the lowest at about 138. That is only true of the 61 brainrots with a published count — plenty of others have never been counted publicly.