Steal an Egg Biomes: All 9 Biomes, Speed Requirements & Guardians
Complete Steal an Egg biomes guide. All 9 biomes ranked by minimum speed, guardian creatures, egg rarity, and progression strategy.
Welcome to the Steal an Egg biomes guide. Steal an Egg features 9 distinct biomes, each gated by a minimum speed requirement and guarded by a unique creature. As you progress from the Forest (no requirement, Chicken guardian) to the Cosmic biome (700M speed, Dragon guardian), eggs become rarer, guardians become faster, and the rewards scale dramatically.
This guide covers every biome's speed threshold, guardian, egg rarity, and recommended progression strategy. For nest-specific locations and spawn mechanics, see our companion Nests Guide.
All 9 Biomes Overview
| Biome | Minimum Speed | Guardian | Egg Rarity | Progression Stage |
|---|---|---|---|---|
| Forest | None | Chicken | Common, Uncommon | Starter |
| Lake | 900 | Swan | Uncommon, Rare | Early game |
| Desert | 10K | Scorpion | Rare, Epic | Early-to-mid game |
| Jungle | 40K | Tiger | Epic, Legendary | Mid game |
| Snow | 170K | Yeti | Legendary | Mid-to-late game |
| Volcano | 700K | Hellhound | Legendary, Mythic | Late game |
| Abyss Ocean | 2.5M | Moby | Mythic | Endgame |
| Prehistoric | 17M | T-Rex | Mythic, Divine | Endgame |
| Cosmic | 700M | Dragon | Divine, Secret | True endgame |
Pro Tip: The listed minimum speed is the floor, not the comfort zone. Carrying eggs applies a movement penalty, so always train 2-3x the minimum before pushing into a new biome. See our Speed Training Guide for the full upgrade path.
Forest Biome
The Forest is the starter biome with no minimum speed requirement. The Chicken guardian patrols slowly with a small detection radius, making escapes trivial even for fresh accounts.
- Minimum Speed: None
- Guardian: Chicken
- Egg Rarity: Common, Uncommon
- Best For: First eggs, Pet Index milestones, starter pet collection
- Strategy: Grab one egg per trip. Use the free +10K speed boost from the spawn hub to skip grinding.
Lake Biome
The Lake is the first gated biome, requiring 900 minimum speed. The Swan guardian is faster than the Chicken and has a wider patrol radius.
- Minimum Speed: 900
- Guardian: Swan
- Egg Rarity: Uncommon, Rare
- Best For: Rare pet drops, first Epic pet fuse fuel
- Strategy: Wait for the Swan to face away before approaching. Use traps if your speed is close to the minimum.
Desert Biome
The Desert requires 10K minimum speed and introduces the Scorpion guardian, which has a wider detection radius than earlier guardians.
- Minimum Speed: 10K
- Guardian: Scorpion
- Egg Rarity: Rare, Epic
- Best For: Epic pet drops, mid-game income scaling
- Strategy: Use terrain cover to break line of sight during approach. Speed trails recommended.
Jungle Biome
The Jungle requires 40K minimum speed and features the Tiger guardian — fast, aggressive, and unforgiving.
- Minimum Speed: 40K
- Guardian: Tiger
- Egg Rarity: Epic, Legendary
- Best For: Legendary pet drops, A Tier pet collection
- Strategy: Speed trails strongly recommended. Drop traps early in the escape phase — the Tiger closes gaps fast.
Snow Biome
The Snow biome requires 170K minimum speed and features the Yeti guardian.
- Minimum Speed: 170K
- Guardian: Yeti
- Egg Rarity: Legendary
- Best For: Legendary pet farming, A Tier pet consolidation
- Strategy: Train well beyond 170K before attempting multi-egg runs. The Yeti's pursuit speed is high.
Volcano Biome
The Volcano is the gateway to the endgame, requiring 700K minimum speed. The Hellhound guardian is aggressive and fast.
- Minimum Speed: 700K
- Guardian: Hellhound
- Egg Rarity: Legendary, Mythic
- Best For: First Mythic pet drops (Phoenix), endgame income scaling
- Strategy: Traps are mandatory. Single-egg runs recommended until your speed exceeds 1.2M. Stack luck boosts during Volcano egg hatching.
Abyss Ocean Biome
The Abyss Ocean requires 2.5M minimum speed and features the Moby guardian. The chase distance is long, making single-egg runs the safe approach.
- Minimum Speed: 2.5M
- Guardian: Moby
- Egg Rarity: Mythic
- Best For: Mythic pet farming, S Tier pet collection
- Strategy: Carry one egg per run. The long escape distance means the Moby has more time to close gaps.
Prehistoric Biome
The Prehistoric biome requires 17M minimum speed and features the T-Rex guardian — huge detection radius, high pursuit speed.
- Minimum Speed: 17M
- Guardian: T-Rex
- Egg Rarity: Mythic, Divine
- Best For: Divine pet drops, endgame income scaling
- Strategy: Approach with extreme caution. The T-Rex's detection radius is the largest of any non-Cosmic guardian. Use traps liberally.
Cosmic Biome
The Cosmic biome is the true endgame, requiring 700M minimum speed. The Dragon guardian is the fastest and most aggressive in the game.
- Minimum Speed: 700M
- Guardian: Dragon
- Egg Rarity: Divine, Secret
- Best For: Secret pet drops, the strongest pets in the game
- Strategy: Max every upgrade — treadmill, speed trails, speed-bonus pets, traps. Single-egg runs only. Stack every luck boost during Cosmic egg hatching.
Biome Progression Strategy
The optimal biome progression path depends on your speed training discipline:
- Forest → Lake — claim the free +10K hub boost, skip directly to Lake after collecting Forest Pet Index milestones.
- Lake → Desert — treadmill AFK training to 10K. Speed trail accelerates the jump.
- Desert → Jungle — fuse Epic duplicates into Legendary, treadmill to 40K.
- Jungle → Snow — consolidate Legendary pets, treadmill to 170K.
- Snow → Volcano — first Mythic threshold. Stack luck boosts before Volcano egg hatching.
- Volcano → Abyss Ocean → Prehistoric → Cosmic — endgame progression. Each biome requires sustained treadmill training and premium speed trails.
For the full treadmill upgrade path, see our Speed Training Guide. For pet drop rates by biome, see our Pet Hatching Guide.
Frequently Asked Questions
How many biomes are in Steal an Egg?
There are 9 biomes: Forest, Lake, Desert, Jungle, Snow, Volcano, Abyss Ocean, Prehistoric, and Cosmic. Each has a unique guardian and egg rarity pool.
What is the hardest biome in Steal an Egg?
The Cosmic biome is the hardest, requiring 700M minimum speed and featuring the Dragon guardian — the fastest and most aggressive in the game. Only attempt it with maxed upgrades.
Can I skip biomes?
Yes — if your speed exceeds a biome's minimum, you can skip it entirely. However, skipping biomes means missing that biome's Pet Index milestones and pet drops, which may slow your overall progression.
What speed do I need for the Volcano biome?
The Volcano requires 700K minimum speed, but comfortable escapes require 1.2M+. Train beyond the minimum because carrying Volcano eggs (which are heavy) applies a movement penalty.
Where can I find nest locations?
For nest-specific spawn points and refresh mechanics within each biome, see our companion Nests Guide.