Eternal · Prehistoric
Mosasaurusin Steal An Egg
$180M/second
Reported base rate; projections below inherit this record's evidence limits.
Pet record: Cross-referenced · checked 2026-08-27
Listed references support this record. This is desk research, not a fresh in-game test; exceptions are noted below.
- Listed incomes
- #5/80
- In Eternal
- #3/7
- In biome
- #1/8
Income with documented mutation multipliers
Show Mosasaurus's calculated mutation rates
Reported base × documented mutation factor; size held at 1×. These are projections, not separate measured variants.
| Mutation | Multiplier | Income / sec | Gain |
|---|---|---|---|
| None | 1× | $180M | — |
| Silver | 1.25× | $225M | +$45M |
| Bloom | 1.5× | $270M | +$90M |
| Golden | 2× | $360M | +$180M |
| Rainbow | 2.5× | $450M | +$270M |
| Spirit Bloom | 3× | $540M | +$360M |
Only mutations with a retained numerical multiplier are modeled; this is not every mutation available in the game. Size can change the result. The income calculator combines the modeled inputs.
How to get Mosasaurus
Mosasaurus hatches from eggs stolen in the Prehistoric biome. That biome needs 17M Speed to enter, and the T-Rex patrols it.
The listed entry figure does not establish a safe carrying speed. Check the entrance and your return route; we have not measured a universal safety margin. Plan a target using your actual training rate →
This egg never waits in a nest. As an Eternal it can appear at an egg reset and is announced to the server, according to the linked spawn references. Other players can pursue the same egg. A reset does not guarantee a rare spawn. How egg spawns work → The published rarity-wide hatch band is several hours, up to about 12 hours; it is not an individually timed Mosasaurus result. Use the duration shown on your egg. Track it →
Biome entry: Cross-referenced · checked 2026-08-27
Listed references support this record. This is desk research, not a fresh in-game test; exceptions are noted below.
Where it sits
Mosasaurus ranks #5 of 80 numerical entries in our current dataset. Provisional figures are included; pets with unknown income are excluded. This is not a complete game-wide ranking. The next pet up is Eternal Lunar Dragon at $250M/s. Directly below it is Stag at $145M/s.
Compare your actual size and variant
Use Mosasaurus's displayed earnings for a real budget. The income calculatorcompares your line-up; the size guide explains why an assumed size factor cannot prove a pet's actual income.
Saving-time projections for Mosasaurus
Time = savings target ÷ reported base income. This assumes one unmutated Mosasaurus, constant earnings and no spending or interruption:
| To bank | Takes | Calculation scope |
|---|---|---|
| $1B | 5 seconds | Constant-rate projection |
| $1T | 1 hour 32 minutes | Constant-rate projection |
These projections do not validate offline limits, collection caps or server bonuses. To combine pets you already own, run your own line-up.
Listed Eternal pets compared
Rarity is a poor guide to income on its own — the Eternal band alone spans $65M/s to $600M/s. Here is where Mosasaurus actually sits among them.
| # | Pet | Found in | Income / sec |
|---|---|---|---|
| 1 | Oni Tiger | Cherry Blossom | $600MSingle-source · provisionalSource · 2026-08-27 |
| 2 | Eternal Lunar Dragon | Cosmic | $250MCross-referencedSource · 2026-08-27 |
| 3 | Mosasaurus — this pet | Prehistoric | $180MCross-referencedSource · 2026-08-27 |
| 4 | El Maja | Abyss Ocean | $130MCross-referencedSource · 2026-08-27 |
| 5 | Lava Dragon | Volcano | $100MCross-referencedSource · 2026-08-27 |
| 6 | Phoenix | Volcano | $85MCross-referencedSource · 2026-08-27 |
| 7 | Ice Dragon | Snow | $65MCross-referencedSource · 2026-08-27 |
| — | Gorilla King | Titan Temple | Not published |
| — | Pegasus | Angels and Demons | Not published |
| — | Skeleton Horse | Angels and Demons | Not published |
| — | Strawberry Elephant | Brainrot Egg | Not published |
Mosasaurus sits 3 of 7 ranked entries in this band. The comparison uses reported base rates, including provisional figures. The tier list ranks by income instead.
Other Prehistoric pets
Mosasaurus FAQ
How much does Mosasaurus earn in Steal An Egg?
The cross-referenced reported base figure is $180M/s before size and mutation bonuses. Mutation projections multiply this figure by a sourced factor; they are calculated scenarios, not measurements of every variant.
Where do you get Mosasaurus?
By stealing its egg from the Prehistoric biome, which needs 17M Speed to enter and is patrolled by the T-Rex. As an Eternal it never waits in a nest: a single rare egg can spawn at an egg reset, every 5 minutes, and the whole server is told its name and biome when it does. Be in Prehistoric before the reset.
Is Mosasaurus a good pet?
It ranks #5 among 80 pets with numerical income entries in our dataset, and #3 among 7 ranked Eternal entries. Unknown incomes are excluded and provisional figures are included. Collection difficulty, hatch odds and your existing pets also matter.
Record checked 2026-08-27. If the current game differs, report the value with its size, mutation, active bonuses and date so the comparison can be reviewed.
Sources and evidence limits
These are the references recorded for the data on this page. Check dates describe our source review, not a new game test. Calculations based on that data inherit its uncertainty.
- eldorado.gg — steal an egg all pets index
Recorded check dates: 2026-08-27
- timesaver.gg — steal an egg best pets
Recorded check dates: 2026-08-27
- beebom.com — all steal an egg biomes
Recorded check dates: 2026-08-27
- techwiser.com — steal an egg biomes
Recorded check dates: 2026-08-27
- beebom.com — steal an egg mutations guide
Recorded check dates: 2026-08-27
- beebom.com — steal an egg sakura incubator guide
Recorded check dates: 2026-08-27, 2026-09-07
- progameguides.com — complete steal an egg sakura incubator guide
Recorded check dates: 2026-09-07
- youtube.com — video 9wZOO0Y7xPk
Recorded check dates: 2026-09-07
- allthings.how — steal an egg eternal oni tiger bloom mutation
Recorded check dates: 2026-09-07
- stealaneggguide.wiki — secret eternal divine eggs
Recorded check dates: 2026-09-11
- eldorado.gg — steal an egg eggs list
Recorded check dates: 2026-09-11
- youtube.com — video g28j2_74n00
Recorded check dates: 2026-09-11
- lolga.com — steal an egg all eggs guide 2026 egg reset biomes best eggs
Recorded check dates: 2026-09-11
Multiple articles can repeat the same original report; agreement is not proof of independent measurement. Report a correction with a dated screenshot and the pet or egg variant.