Eternal
Base income$180M/s
Base weight30K kg
Found in🦖 Prehistoric
Speed needed18M
GuardianT-Rex
Income rank60th of 197
Mosasaurus is a Eternal pet in Roblox Steal an Egg that hatches from the Mosasaurus Egg. At normal size with no mutation it earns $180M/s — the 20th best of 24 Eternal pets and 60th out of all 197 pets in the game.
How to get Mosasaurus
Reach about 18M Speed and travel to the Prehistoric biome 🦖. Wait until the T-Rex guardian is asleep, grab the Mosasaurus Egg from the nest and run back to your pen before you get caught. Nests reset every 5 minutes, and bigger eggs are worth more but make you slower — so bring extra Speed.
💰 Mosasaurus income with mutations
| Mutation | Multiplier | Income (normal size) |
|---|---|---|
| Normal | ×1 | $180M/s |
| Silver | ×1.2 | $216M/s |
| Bloom | ×1.25 | $225M/s |
| Golden | ×2.5 | $450M/s |
| Spirit Bloom | ×2.5 | $450M/s |
| Fractured | ×2.75 | $495M/s |
| Scrambled | ×2.75 | $495M/s |
| Parasite | ×3 | $540M/s |
| Rainbow | ×3.5 | $630M/s |
📏 Income by size
Open the calculator →Bigger eggs hatch heavier pets that earn more. Base weight is 30K kg; above 125× the gains slow down.
| Size | Weight | Income | Income (Rainbow) |
|---|---|---|---|
| 1× | 30K kg | $180M/s | $630M/s |
| 2× | 60K kg | $276M/s | $966M/s |
| 5× | 150K kg | $485.63M/s | $1.7B/s |
| 10× | 300K kg | $744.63M/s | $2.61B/s |
| 50× | 1.5M kg | $2.01B/s | $7.03B/s |
| 100× | 3M kg | $3.08B/s | $10.78B/s |
| 500× | 15M kg | $6.15B/s | $21.54B/s |
