How to Unlock All Biomes in Steal An Egg: Speed Requirements in Order

To unlock all biomes in Steal An Egg you work through 12 biomes in a fixed order, each farther from your base with a higher speed requirement and a tougher guardian. This guide covers the unlock order, how to raise Speed faster, what the guardians do, and what waits in the endgame. For one page per biome, see the biome list.

What is the biome unlock order?

Forest → Lake → Desert → Jungle → Snow → Volcano → Abyss Ocean → Prehistoric → Cosmic → Cherry Blossom → Titan Temple → Angels & Demons. Each biome sits farther from your base than the one before it, and generally has stronger guardians and better eggs.

What is the speed requirement for each biome?

"Unlocking" a biome does not mean a door opens. Guides report you can walk into any biome at any Speed — nothing stops you at the border, so the number is not really a speed gate. It matters on the way out: once you grab an egg, the guardian wakes and chases you, and the speed requirement is the Speed you need to get home ahead of it. The wiki adds that bigger eggs slow you down and need even more than what is listed, so treat these as the minimum for an average egg.

Each count links to that biome's section of the eggs by biome list.

How do I raise Speed fast?

The loop is simple: pets earn income per second, and income buys the upgrades that raise Speed. The official game description says you train on the treadmill to gain Speed and upgrade your treadmill and base; the wiki adds trails as a second source of movement speed. Put early income into treadmill and trail upgrades, then check how long each next requirement will take with the speed calculator.

What are guardians and do they block me?

Guardians are monsters that sleep next to the nests. You approach, steal an egg and run for your base before they catch you — so Speed is what keeps you ahead of faster guardians in higher biomes. Carrying a big egg slows you down, which is when guardians catch up.

What about the Rift and Event groups?

Besides the 12 progression biomes, eggs are also grouped under Rift (16 eggs) and Event (16 eggs). Neither is a biome you unlock with Speed. Rift eggs such as the Rift Eye, Voidmaw, Shardwing and World Eater do not come from normal nests — they come from the Rift event, where you sacrifice pets at the Rift in the lobby. Event eggs appear only during limited-time events. If you are waiting on a rare egg in a biome you already reach, estimate its spawn windows.

Anything hidden in the endgame biome?

Angels & Demons is the last biome, at 20B Speed, and the wiki says it shifts between Angels and Demons each night. The wiki also describes a Secret Shrine hidden somewhere in the biome — its exact location is not published and is pending in-game verification. According to the wiki, the Shrine fuses a Light pet with its Darkness counterpart of the same rarity:

• Pegasus + Skeleton Horse → Equinox (Eternal) — pending in-game verification
• ArchAngel + World Burner → Aetheron (Divine) — pending in-game verification

What should I do next after unlocking everything?

Once every biome is open, income is the game. Compare base income across all pets, then work out what your best pets are really worth with size and mutation in the value calculator.