The short version
Rolling converts Cash into roster. Luck is the only dial you control: stack a code boost (+2 to +4 for 5-10 minutes), roll in bursts inside the window, and let permanent rebirth Luck (2x to 208x) compound every future session.
Build a Base and Steal Pet Rolling Guide
How rolls work, what Luck actually changes, and a session discipline that turns the documented multipliers - codes, rebirth tiers, and the pet Index - into steady collection growth.
Checked 2026-10-06Luck windows documented
What rolling is documented to do
The official description's 'roll for rare pets' line makes rolling the primary acquisition path, and the published economy gives it two confirmed levers: Cash cost per roll and Luck on the outcome.
The Golden mutation (1.5x income and sale value) comes exclusively from Pet Rolls per the Sportskeeda table from August 5, 2026 - no event required - which means every roll session carries a chance at the roster's best persistent multiplier.
Rebirth Luck is the long lever: the permanent multiplier starts at 2x after tier 1 and reaches 208x at tier 16, so two players with identical Cash can see very different roll results.
The Luck-window session
Claim an active code first - the documented rewards are +2 to +4 Luck for 5-10 minutes, and the four tracked strings (UPDATE, VOLCANOO, WeHit30K, Happy30K) have all been Luck boosts.
Set the session's Cash limit before the first roll, then roll in bursts inside the window rather than dribbling rolls across an hour. When the boost expires, stop and bank the results: place new pets, mutate-check them, sell true duplicates, and update the base.
The pet Index turns every new species into a permanent Cash and Luck boost, so the first copy of a species is worth more than its income line suggests. Duplicate species are seller candidates; duplicate mutations on the same pet cannot happen - one mutation per pet.
Reading odds honestly
The developer has yet to publish an official probability table, so this guide does the next best thing: it tracks what the community has measured. No public source documents exact per-roll odds or a pity system for this game as of the October 3, 2026 check.
What is documented is the multiplier structure around rolls - code Luck, rebirth Luck, and event mutations - so the rational strategy is maximizing those rather than hunting rumored odds.
Treat any third-party odds table with dates and a redemption method as the stronger claim, and without them as background noise. The in-game result screen remains the only odds source that updates with the live build.
Roll budgeting by progression stage
Early (pre-rebirth): small bursts only. The first Cash belongs to walls and the tier-1 requirement pair (Cat + Chicken); rolls grow once defense exists.
Mid-ladder (tiers 2-8): roll inside Luck windows with a fixed share of income - the growing permanent multiplier makes each burst stronger, and requirement species (Owl, Llama, Zebra, Elephant and up) often arrive through rolls.
Late ladder (tiers 9-16): rolls chase mythicals and Golden mutations while steals and events cover the rest. At 208x Luck, the burst strategy compounds enough that disciplined windows outperform constant rolling.
Reference
The roll-only prize
Golden is the one mutation that comes from rolls rather than events.
| Mutation | Multiplier | How obtained | Notes |
|---|---|---|---|
| Golden | 1.5x income and sale value | Pet Rolls only | No event requirement; roll luck decides when a Golden appears. |
| Cosmic | 2x income and sale value | Cosmic Invasion event | A spaceship abducts pets from your base and returns them mutated. |
| Inferno | 3x income and sale value | Volcano event | The event spawns a volcano, and pets in your base have a small chance to return mutated. |
| Admin | 4x income and sale value | Admin Abuse events only | Developer-run windows announced after updates; the community Discord tracks them. |
Source: Sportskeeda mutations guide (2026-08-05). Checked 2026-10-06.
a pet holds a single mutation, and mutations cannot be transferred between pets. the pet Index pays permanent Luck and Cash boosts as the collection grows, on top of mutation multipliers.
Source: Sportskeeda mutations guide (2026-08-05). Checked 2026-10-06.
Luck windows
Code boosts to chain before a roll session
every documented reward so far is a temporary Luck boost (+2 to +4 Luck), which improves pet-roll odds for a 5-10 minute window
| Code | Reward | Status | First reported |
|---|---|---|---|
| UPDATE | +4 Luck for 10 minutes | Reported active | August 16, 2026 (GameRant) |
| VOLCANOO | +4 Luck for 10 minutes | Verified in-game by the fan wiki on 2026-07-28 | late July 2026 |
| WeHit30K | +2 Luck (10 minutes per GameRant; 5-10 minutes per the fan wiki) | Verified in-game by the fan wiki on 2026-07-25 | July 2026 |
| Happy30K | +2 Luck for 10 minutes | Verified in-game by the fan wiki on 2026-07-25 | July 2026 |
| Happy30KCopy | rejects with an invalid-code message | Broken variant | July 2026 |
| WeHit30KCopy | rejects with an invalid-code message | Broken variant | July 2026 |
| RADIOACTIVE | +2 Luck for 5 minutes | Reported by two independent trackers at the Sep 28, 2026 recheck | August 2026, around the Clans update window |
Source: GameRant (2026-08-16), build-a-base-and-steals.wiki (2026-07-31), Pro Game Guides (2026-08-21), MrGuider (August 2026), site record (2026-09-28). Checked 2026-10-06.
FAQ
Rolling questions
How do Luck boosts work?
Temporary boosts from codes (+2 to +4 Luck for 5-10 minutes per documented rewards) and permanent boosts from rebirth tiers (2x to 208x) both improve roll outcomes; stack a code window right before a roll burst.
What are the exact roll odds?
The developer has yet to publish a probability table, and no public source documents per-roll odds as of October 3, 2026 - the documented levers are Luck multipliers, not odds tables.
Can I roll a Golden pet?
Yes - Golden is the roll-exclusive mutation at 1.5x income and sale value, per the Sportskeeda mutation table published August 5, 2026.
Is there a pity system?
No pity or guarantee system appears in the sources checked on October 3, 2026; treat claims of one as reported until a creator-owned source documents it.
Should I roll or buy pets directly?
Rolls are the species-discovery path and the only documented route to Golden mutations; direct purchases fill known income gaps. Late ladder, roll inside Luck windows and buy to complete requirement pairs.
Next checks
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