Stealaneggs The Prehistoric biome in Steal An Egg requires 18M Speed (18,000,000). Its guardian is the T-Rex. The previous gate is Abyss Ocean. After Prehistoric, the next unlock is Cosmic at 700M.
Time to reach Prehistoric
Prehistoric pets and base income
8 pets hatch from Prehistoric eggs. Plug any of them into the value calculator to add size and mutation bonuses.
| Mosasaurus | Eternal | $180M/s |
| Tralaledon | Secret | $32M/s |
| T-Rex | Secret | $25M/s |
| Bronto | Cosmic | $1.5M/s |
| Triceratops | Cosmic | $1.2M/s |
| Ankylosaurus | Mythic | $120K/s |
| Pterodactyl | Legendary | $22K/s |
| Dodo | Rare | $280/s |