Mosasaurus and Mosasaurus Egg
Use the two views to distinguish the hatched pet from the egg you carry. Artwork is shown at the original square aspect ratio.
Mosasaurus stats
| Collection | Prehistoric | Index slot 8 of 8 |
|---|---|---|
| Rarity | Eternal | Matches the current profile name |
| Base income | $180M/s | 180,000,000 per second in the captured configuration |
| Egg | Mosasaurus Egg | 6h base growth · 6 kg configured egg weight |
| Pool share | 0.311113% | Configured weighted-pool share; separate event or bonus rolls can still apply |
| Model weight | 30,000 kg | Species reference value, not the weight of every hatched pet |
| Index reward | +600,000 Speed | Collection entry reward in the captured profile |
| Availability | unknown | Listed in the Sep 4 in-game Pet Index; a current live spawn was not independently observed in this audit. |
How to get Mosasaurus
Reach Prehistoric, collect Mosasaurus Egg, carry it back to your base and let it hatch. Higher-rarity eggs may need more Speed and a safer return route.
- Open the current Prehistoric source and confirm the egg or event is available.
- Use the egg artwork above to identify Mosasaurus Egg; do not confuse it with the hatched pet model.
- Return the egg to your base and use the live countdown as the final hatch-time value.
Mosasaurus base-income outputs
These totals multiply the captured species base rate by time only. They do not add mutation, size, VIP or event bonuses.
| Time | Base output |
|---|---|
| 1 minute | $10.8B |
| 10 minutes | $108B |
| 1 hour | $648B |
| 24 hours | $15.55T |
Open the income calculator to add your own displayed rate and team mix.
More Prehistoric pets
Sources and update note
The image mapping uses asset IDs discovered in a public game-configuration profile. Public asset IDs are resolved through Roblox's official thumbnail API; private thumbnail results use the attributed public profile artwork approved for this site. Numeric fields are a September 8, 2026 external configuration snapshot, not a promise that a later game build is unchanged.
Mosasaurus FAQ
How do you get Mosasaurus in Steal An Egg?
Reach Prehistoric, collect Mosasaurus Egg, carry it back to your base and let it hatch. Higher-rarity eggs may need more Speed and a safer return route.
How much does Mosasaurus make?
The captured configuration lists $180M/s as the species base income. Size, mutations and active bonuses can change the displayed result.
How long does Mosasaurus Egg take to hatch?
The captured base growth time is 6h. Use the countdown on your own egg after size or growth effects are applied.