Prehistoric biome — from YamashiP on YouTube
Image: YamashiP on YouTube

Steal An Egg Wiki · 3 min read

Prehistoric Biome in Steal An Egg: Speed Gate, Pets and Guardian Tips

TL;DR, bestie

  • Prehistoric is the dinosaur biome in Steal An Egg.
  • The gate recommends about 17–18 million Speed.
  • 8 pets, from the Rare Dodo to the Eternal Mosasaurus.
  • Two Secrets live here: T-Rex and Tralaledon.

Prehistoric is where Steal An Egg turns into a dinosaur park with a theft problem. The eggs are worth a lot, the Guardian is mean, and every player in the server wants the same T-Rex.

Prehistoric at a glance

FactDetail
TypeBiome
ThemeDinosaurs
Recommended Speed17,000,000 – 18,000,000
Pets8
Top rarityEternal (Mosasaurus)
GuardianPrehistoric Guardian
Prehistoric showcase
Image: YamashiP on YouTube · see also YouTubers I follow

Every Prehistoric pet

Income is the base money per second from the pet card. Size and mutations multiply it.

PetRarityBase income
DodoRare$280/s
PterodactylLegendary$22K/s
AnkylosaurusMythic$120K/s
TriceratopsCosmic$1.2M/s
BrontoCosmic$1.5M/s
T-RexSecret$25M/s
TralaledonSecret$32M/s
MosasaurusEternal$180M/s

Swipe the table sideways →

Bronto out-earns Triceratops even though both are Cosmic, and Tralaledon beats T-Rex at Secret. If you're choosing which egg to grab, grab by income, not by how cool the dino looks.

How to reach Prehistoric

  1. Build Speed on your treadmill.
  2. Stack a strong trail for the multiplier.
  3. Aim to pass 18 million, not just 17. Heavy eggs slow you down on the way home.
  4. Check the gate sign when you arrive. The game shows the recommended Speed there.

The gate doesn't stop you. It's a warning. Walk in at the bare minimum carrying a big Cosmic egg and the Guardian will catch you before you clear the zone.

Prehistoric - How to reach Prehistoric
Image: PlayGameWithZubby on YouTube · see also YouTubers I follow

Farming tips

  • Watch the reset: nests refresh about every five minutes. Be at the gate when the timer rolls over.
  • Pick one target: decide before the reset whether you're going for a Cosmic or a Secret.
  • Carry the bat: other players will try to knock your egg loose. Hit first.
  • Clear your path: traps stun anyone who steps on them, including you.
  • Guard home: a garden full of dinos is a raid magnet. Don't go AFK with it unprotected.

Prehistoric vs nearby biomes

BiomeRecommended SpeedTop pet
Abyss Ocean2,500,000El Maja (Eternal)
Prehistoric17–18 millionMosasaurus (Eternal)
Enchanted Forest50 billionDivine pets

Prehistoric is the first biome where one good grab can change your whole garden. Overshoot the Speed, wait for the reset, and go for the Secret if you're confident. If not, a Bronto is still a huge upgrade.

FAQ

How much Speed do you need for Prehistoric in Steal An Egg?

The gate recommends about 17 to 18 million Speed. Go a bit higher so heavy eggs don't get you caught.

What pets are in Prehistoric?

Dodo, Pterodactyl, Ankylosaurus, Triceratops, Bronto, T-Rex, Tralaledon and Mosasaurus.

What is the best Prehistoric pet?

The Eternal Mosasaurus, with a base income of $180M per second.

Is T-Rex better than Tralaledon?

Both are Secret, but Tralaledon has the higher base income ($32M/s vs $25M/s).

🗓️ Last updated: 7 November 2026

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