Guest 666: income, cost and how to get it
Formula follows the wiki's worked examples. Not verified in game.
By base income it is number 73 of 338 Secret brainrots with a stated income on the wiki, where 1 is the highest and ties share a rank. It pays for itself in 3.9 min with no mutation. The wiki names: Guerriro Digitale, Rituals.
Guest 666 facts
| Rarity | Secret |
|---|---|
| Income per second | $66.6M/s |
| Cost | $15.6B |
| Payback time | 3.9 min |
| Rank among Secret | 73 / 338 |
| Released | Update 23, Nov 1, 2025 |
| Availability | obtainable |
| Comes from | Guerriro Digitale, Rituals |
| Wiki notes | comes from a Ritual |
How to get Guest 666
- Guerriro Digitale: 0.5% chance, per the wiki
These are the ways the wiki lists. Some of them are developer-run events or limited stock, so a listed way is not always open.
Guest 666 income with mutations
| Mutation | Multiplier | Income per second |
|---|---|---|
| Default | 1x | $66.6M/s |
| Gold | 1.25x | $83.25M/s |
| Diamond | 1.5x | $99.9M/s |
| Rainbow | 10x | $666M/s |
| Cyber | 11x | $732.6M/s |
| Eclipse | 14x | $932.4M/s |
| Eclipse + Fire + Nyan | 24x | $1.5984B/s |
Multiplier = mutation + traits, income = base x multiplier. Fire and Nyan are 5x each. 15 mutations exist; the table shows the main ones.
Nearby brainrots
Brainrot income list · Calculate with Guest 666 · Traits and mutations
Questions
What are the chances of getting Guest 666?
The wiki gives 0.5% from Guerriro Digitale. Other ways it lists: Rituals. These are the wiki's figures, not measured here.
Where does Guest 666 come from?
For Guest 666, the wiki names: Guerriro Digitale, Rituals. It arrived in update 23 (Nov 1, 2025).
When was Guest 666 released?
The wiki lists Update 23, which went live on Nov 1, 2025.
Source: Steal a Brainrot Wiki: Guest 666 (rev 186764, Oct 4, 2026), Update Log (rev 188265, Oct 11, 2026). Licence: CC BY-SA 3.0. Facts were restructured and the numbers recalculated here; the text is our own and no wiki images are used. Changes were made. Checked Oct 15, 2026. Not affiliated with Roblox Corporation or the developers of Steal a Brainrot.