Puffino Builderino

Puffino Builderino 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, Puffino Builderino earns $31.0M/s and costs $3.8B 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, Puffino Builderino prices currently range from $7 for the Default variant up to $8.4 for Diamond. Mutation multipliers compound on the base income, so the same Puffino Builderino body at a higher-tier mutation out-earns its Default variant by exactly that ratio per second.

Current market signals: demand is amazing, price trend is rising. Puffino Builderino is in an active flipping window: buyers are bidding it up faster than the market median, and listings are clearing at the new prices. Expect to pay a premium if you're acquiring; you can usually trade slightly above listed value if you're offering one.

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.