Los Spyderinis
Secret tier brainrot in Steal a Brainrot
About Los Spyderinis
Los Spyderinis is a secret-tier brainrot in Steal a Brainrot, the Roblox collection-and-trading game where every pet generates passive income and can be upgraded with mutations and traits. At base, Los Spyderinis earns $425.0K/s and costs $125.0M from the in-game shop — those numbers are the floor, before any multiplier from mutations or trait stacking is applied.
Across live Eldorado marketplace listings, Los Spyderinis prices currently range from $0.75 for the Default variant up to $4.99 for Cyber — a 6.7x spread reflecting the multiplier gap between mutation tiers. Mutation multipliers compound on the base income, so the same Los Spyderinis body at a higher-tier mutation out-earns its Default variant by exactly that ratio per second.
Current market signals: demand is terrible, price trend is falling. Los Spyderinis's market is soft right now: low buyer activity and a falling median price. Sellers are likely to keep dropping list price to find takers; buyers can usually negotiate below the listed value.
For trade evaluation, divide the USD value by your offer's value to get a clean ratio. The trade calculator does this automatically and applies trait amplifiers (Brilliant, Sniper, etc.) which add to base income additively rather than multiplicatively. See the methodology page for how the valuation algorithm actually computes these numbers, or the trade-valuation guide for a step-by-step walkthrough.
Background & lore
Source: Steal a Brainrot Wiki ↗Los Spyderinis is a Brainrot released on August 23rd, 2025. This brainrot can only be obtained from the Sammyni Ritual. You can do the Sammyni Ritual by making a square with four Sammyni Spyderinis. This ritual also triggers the Sammyni Invasion event. It was formerly obtainable from the Admin Lucky Block and from Sammy's Base. But it was removed from the Admin Lucky Block due to lack of space.
Trivia
- This brainrot was originally going to be Los Spiderinis, which required you to do a ritual with an unknown amount of Chimpanzini Spiderinis likely the same amount as now.
- This Brainrot is based off of a Brainrot which used to be Chimpanzini Spiderini, which is Sammyni Spyderini.
- Sammyni Spyderini was brought back along with Gattatino Nyanino and Unclito Samito.
- Along with the Los Chicleteiras and Los Karkeritos this is one of the only brainrots' rituals that requires more/less than 3 of its kind.
- Although it is more expensive than Los Tralaleritos, it still makes less money than it.
Background content sourced from the community-maintained Steal a Brainrot Wiki under CC BY-SA 3.0. rot.rocks is not affiliated with the wiki or with Roblox.
Mutation values
| Mutation | Multiplier | USD Value |
|---|---|---|
 Default | 1× | $0.75 |
 Gold | 1.25× | $0.83 |
 Diamond | 1.5× | $0.9 |
 Bloodrot | 2× | $10 |
 Candy | 4× | $16 |
 Galaxy | 7× | $3 |
 Yin Yang | 7.5× | $6 |
 Radioactive | 8.5× | $8 |
 Cursed | 9× | $3 |
 Rainbow | 10× | $3.5 |
 Divine | 10× | $10 |
 Cyber | 11× | $4.99 |
Values are derived from current Eldorado marketplace listings. When a specific mutation has no live listings, the value is interpolated from surrounding multiplier tiers — see the methodology page.
Trade Los Spyderinis
Want to trade this brainrot? Post an offer on the rot.rocks trading marketplace, or run the numbers through the trade calculator before you commit to a deal.