Steal An Egg Extinction Egg: 6 Pets & Skeletal Reroll (2026)
Last updated: 2026-10-10
The complete Steal An Egg Extinction Egg guide: all six extinct animals and their six Skeletal counterparts with rarity, the Robux bundle prices, how the Skeletal reroll actually rolls, and why the egg sits outside the free Lab and Mecha progression. Patch-note facts are separated from community estimates throughout.
Update 6 paid egg — separate from the free Lab and boss loop
The Extinction Egg arrived on September 26, 2026 with Update 6, “Dr. Scramble’s Revenge”. It is a Robux purchase in the Featured section of the shop, and the official notes confirm exactly three things about it: six new extinct animals, a small chance to reroll a hatch, and rerolls that give a rare Skeletal version of that animal. Prices, the full roster and the reroll odds below come from gaming media and community indexes, and each is labelled with its source.
What the Extinction Egg is in Steal An Egg
Most Steal An Egg eggs are tied to a place: you steal them from a biome, outrun a Guardian, carry them home and hatch them in your pen. The Extinction Egg breaks that pattern completely. You buy it with Robux from the Featured shop panel, it has no biome, no Guardian and no stealing step, and it never enters your pen as a carried egg. It is a straight purchase with a hatch attached.
The theme is extinction, and the pool leans on it hard. Every base animal is something that no longer exists — a Glyptodon, a Terrorbird, a Giant Sloth, a Dunkleosteus, a Gigantus and a Sabertooth — and the egg’s signature mechanic is a chance for the hatch to come out as a skeletal version of whatever you rolled. That single design choice is what makes the egg more than a price tag: the same animal can land twice with a full rarity tier between the two results.
It is also the first Steal An Egg egg whose contents were documented by mainstream gaming media rather than only by fan trackers, which is why the roster below can be listed by name with confidence instead of being described in vague terms.
All six Extinction Egg pets and their Skeletal versions
Twelve hatch outcomes, six animals. The base column is what the first roll can land on; the Skeletal column only appears through the reroll, and every Skeletal pet sits one tier above its base form. The roster and the rarities below are as published by IGN’s Steal An Egg egg database.
| Base pet | Rarity | Skeletal version | Skeletal rarity |
|---|---|---|---|
| Glyptodon | Legendary | Skeletal Glyptodon | Secret |
| Terrorbird | Mythic | Skeletal Terrorbird | Secret |
| Giant Sloth | Cosmic | Skeletal Giant Sloth | Secret |
| Dunkleosteus | Secret | Skeletal Dunkleosteus | Eternal |
| Gigantus | Eternal | Skeletal Gigantus | Eternal |
| Sabertooth | Divine | Skeletal Sabertooth | Divine |
Rarity ladder used across this site: Common → Uncommon → Rare → Epic → Legendary → Mythic → Cosmic → Secret → Eternal → Divine.
How the Skeletal reroll actually rolls
The official wording is precise enough to plan around: the egg rolls an animal, then a small chance triggers a reroll, and a reroll gives you the Skeletal version of that same animal. Read it as two gates stacked in sequence, not as one flat pool of twelve options. The first gate decides the animal, and the second gate decides whether you get the rare version of it.
That stacking is the whole reason the top prize is so hard to reach. To hold a Skeletal Sabertooth you first have to land the Divine Sabertooth from six animals, and only then clear the reroll gate on top of it. The developer has not published the reroll chance, so the odds you see quoted around the community — usually described as around one percent — are estimates from pet-index sites rather than confirmed figures, and this page treats them that way.
Because the reroll only ever upgrades the animal you already rolled, there is no path to buying a specific Extinction pet directly. If you want one particular Skeletal animal, you are committing to repeated hatches and hoping both gates line up.
Extinction Egg price and bundles
The Featured listing for Update 6 showed four bundle sizes, with a sale that ran through October 10, 2026. Per-egg cost falls steeply as the bundle grows, which is the only part of the pricing you can actually control.
| Bundle | Price | Per egg |
|---|---|---|
| 1 Extinction Egg | 99 Robux | 99 |
| 3 Extinction Eggs | 249 Robux | ≈ 83 |
| 10 Extinction Eggs | 799 Robux | ≈ 80 |
| 50 Extinction Eggs | 3,499 Robux | ≈ 70 |
Per-egg figures are arithmetic on the listed bundle prices, not separate shop entries. Featured pricing and sale windows can change without patch notes, so confirm in-game before buying.
Is the Extinction Egg worth it in Steal An Egg?
The honest answer is that this egg has a strong floor and an unreasonable ceiling, and the two should be judged separately. Community pet indexes place the regular Sabertooth around 5 billion per second and the Skeletal Sabertooth around 9 billion per second, which makes the base Divine pull a genuinely strong pet on its own and the Skeletal one of the highest income figures recorded in the game. Both numbers are community estimates from pet-index sites — the developer does not publish income values, and balance passes can move them.
The opposite end of the pool is where the risk sits. Other animals in the same egg sit several orders of magnitude below the Sabertooth, so a run of ordinary hatches can feel like very little return for the Robux. That gap between the floor and the top is the defining feature of this egg, and it is why the sensible way to buy is to decide up front which side you are playing for.
If you want income and you already have a working lineup, the Sabertooth floor makes the egg defensible. If you are chasing the Skeletal version specifically, treat it as a jackpot on top of an already-good pull rather than the reason to open the egg, because the second gate is the part you cannot influence. And if Robux is not the plan, nothing here is required: the Update 6 free track — the Lab trade-in and the Mecha boss — still hands out its own rewards on a 30-minute timer.
Extinction Egg vs the free Update 6 systems
Update 6 shipped three systems at once, and only one of them costs Robux. Keeping them straight prevents the most common mistake with this update, which is assuming that buying Extinction Eggs speeds up the free track.
| System | Cost | What it gives you |
|---|---|---|
| Dr. Scramble’s Laboratory | Free — eggs you already own | Trade in three eggs directly for the banner pool; pity guarantees the top reward. |
| Mecha boss fight | Free — every 30 minutes | Samples per win, Boss Milestone progress toward Tier 100, and a rare Divine drop. |
| Extinction Egg | Robux — Featured shop | Six extinct animals plus Skeletal rerolls. No pity, no milestone progress, no Samples. |
The free Divine chase from the boss fight is a separate pet from the Extinction pool, and it is the strongest thing in the update that costs no Robux — worth prioritising before any premium purchase.
How to open Extinction Eggs without wasting Robux
Open in batches rather than one at a time. The reroll is a low-chance event, so single opens are pure variance and tell you nothing about your luck; a batch is the smallest sample that gives a readable result, and it usually picks up a base Sabertooth or two along the way. Buy the largest bundle you are comfortable with, because per-egg cost drops sharply and the reroll does not care how you bought the egg.
Decide your target before you open, not after. If the base Sabertooth is the goal, the egg is a reasonable purchase and the Skeletal version is a bonus. If the Skeletal Sabertooth is the only acceptable outcome, be aware you are stacking a Divine pull and a reroll, and budget accordingly rather than topping up one bundle at a time.
Last, never route any of this through off-platform deals. Every hatch and trade in Steal An Egg happens inside Roblox, and buying pets, accounts or Robux outside it breaks the Roblox Terms of Service and is the standard way these accounts get compromised.
For the systems this egg shipped alongside, see the Dr. Scramble event guide, and for the update that followed it the Enchanted Forest guide.
The Extinction Egg system — six extinct animals, a small chance to reroll a hatch, rerolls returning a Skeletal version of that animal, and its separation from the Lab and boss progression — is confirmed by the official Update 6 patch notes relayed from the developer Discord and mirrored by Sportskeeda, TechnoSports and bloxodes. The named twelve-pet roster and rarity tiers are as published by IGN’s Steal An Egg database. Bundle prices are as reported from the Featured listing. The reroll chance and all income figures are community estimates from pet-index sites (Eldorado, IGN, bloxism) and are not developer-published values; this page labels them as estimates rather than presenting them as fact.
Steal An Egg Extinction Egg — FAQ
What is the Extinction Egg in Steal An Egg?+
The Extinction Egg is the paid egg added in Update 6, “Dr. Scramble’s Revenge”, which shipped on September 26, 2026. It sits in the Featured section of the Robux shop rather than in a biome, and it is the only egg whose pool is built entirely around extinct animals. The official patch notes describe it in three lines: six new extinct animals, a small chance to reroll the hatch, and rerolls that return a rare Skeletal version of the animal you rolled. Everything else about the egg — the roster, prices, odds — comes from gaming media and community indexes, and this page marks which is which.
How many pets are in the Extinction Egg?+
Twelve outcomes from six animals. The base pool is Glyptodon, Terrorbird, Giant Sloth, Dunkleosteus, Gigantus and Sabertooth, and each of those six has a matching Skeletal counterpart that only appears through the reroll. That is why you will see the egg described both as “six pets” and as “twelve pets” — both are correct, depending on whether the counter is counting animals or hatch results. The base six span Legendary through Divine, and the Skeletal versions sit one tier above their base form in every case.
How does the Skeletal reroll work?+
Every hatch first rolls one of the six base animals. A separate, much smaller roll then decides whether that hatch is “rerolled” into the Skeletal version of the same animal. The developer has not published the reroll chance; community pet indexes estimate it at roughly one percent, which is an estimate rather than a confirmed number. Two consequences matter in practice: the reroll can only upgrade the animal you already rolled, so a Skeletal Sabertooth requires hitting both the Divine pull and the reroll, and there is no way to buy a specific animal directly.
How much does the Extinction Egg cost?+
The Featured listing showed four bundles: 1 egg for 99 Robux, 3 eggs for 249 Robux, 10 eggs for 799 Robux and 50 eggs for 3,499 Robux, with a sale that ran through October 10, 2026. Per-egg pricing improves sharply as the bundle grows — 99 Robux for a single egg against about 70 Robux per egg in the 50-bundle — so if you intend to open more than a couple, buying larger is the only lever you control. Because this is a Featured listing, the price and the sale window can change without patch notes, so check the in-game panel before spending.
Is the Extinction Egg worth buying in Steal An Egg?+
It depends on whether you want income or collection, because the floor and the ceiling of this egg are wildly different. Community pet indexes put the regular Sabertooth at roughly 5 billion per second and the Skeletal Sabertooth at roughly 9 billion per second — community estimates, not published values — and put the low end of the pool in the thousands per second. So the honest reading is that the egg is a Robux-priced income jump with a very long tail, not a reliable route to the Skeletal chase pet. If you are still building your free lineup, the Lab and the Mecha boss give you rewards with no Robux attached.
Does the Extinction Egg replace the Lab or the boss fight?+
No, and the official notes are explicit that it is separate. Update 6 shipped three independent systems: Dr. Scramble’s Laboratory, which replaced the Rift Trade-In Machine and now takes eggs directly; the recurring Mecha boss, which pays Samples and Boss Milestone progress every 30 minutes; and the Extinction Egg, which is a straight Robux purchase with no boss victory or Lab submission step attached. Buying Extinction Eggs does not advance Lab pity and does not count toward the 100-tier Boss Milestone, so the free progression track stays exactly as grindy as it was.
Are there Extinction Egg codes in Steal An Egg?+
There are no codes, and there never have been. Steal An Egg has shipped no redeem-code system across any update, so no code can grant the Extinction Egg, the Sabertooth or the Skeletal Sabertooth. Any video or page promising a “free Extinction Egg code” is fabricated — the only route to the egg is the Robux Featured listing, and the only route to its pets is hatching it. The codes tracker logs any system change the moment it is verified, and it currently records nothing.
