Prehistoric Biome in Steal An Egg: Speed Requirement, Eggs & Pets

Steal An Egg's Prehistoric biome — unlocks at ~17-18M Speed. Full egg pool from Dodo to the $180M/s Mosasaurus and $32M/s Tralaledon.

9/23/2026 Last updated: 9/23/2026 1 min read

Prehistoric Biome in Steal An Egg: Speed Requirement, Eggs & Pets

FAQ

What Speed do I need for the Prehistoric biome?

Roughly 17–18 million Speed — the eighth gate and the largest single jump on the main path, usually requiring rebirths plus Eternal-tier trails.

What is the best pet in the Prehistoric egg?

Mosasaurus, an Eternal pet earning $180M/s. Two Secrets — Tralaledon ($32M/s) and T-Rex ($25M/s) — sit below it.

Is Prehistoric worth the Speed grind?

Yes — it is the last zone before the billion-Speed endgame, and its Secrets alone out-earn almost everything in Abyss Ocean.

What is the Prehistoric biome?

Prehistoric is the eighth zone, gated at roughly 17–18M Speed — the steepest gate jump on the main path (nearly 7x over Abyss Ocean) and the point where rebirth-stacked speed is effectively required. The egg pays for it: two Secrets and the Eternal Mosasaurus at $180M/s. The zone guardian is the T-Rex — fitting, since a T-Rex is also one of the egg’s Secret-tier hatches.

Prehistoric egg pool

Pet	Rarity	Income
Dodo	Rare	$280/s
Pterodactyl	Legendary	$22K/s
Ankylosaurus	Mythic	$120K/s
Triceratops	Cosmic	$1.2M/s
Bronto	Cosmic	$1.5M/s
Tralaledon	Secret	$32M/s
T-Rex	Secret	$25M/s
Mosasaurus	Eternal	$180M/s

What should I do in Prehistoric?

You are in the endgame corridor — every egg here is worth banking, and the next gate (Cosmic, ~700M) is a long project. Stack rebirth income bonuses, work toward Eternal/Divine trails, and keep the reset rhythm for the Secret spawns. Full ladder: biomes overview.

biomes prehistoric eggs endgame

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