Steal an Egg Alien Biome: 250B Speed & Gate Guide

If you want to know how to unlock the Alien Biome in Steal an Egg, the short version is this: reach 250 billion Speed, walk in, and steal. The longer version is where it gets interesting, because the biome hides a fishing quest, a secret Lagoon, a seven-Relic gate, and a global Nebuloth Kraken event on top of the normal egg runs.

Here is everything in the order you will actually need it.

Alien Biome at a Glance

Detail	What We Know (Update 12)
Release	November 7, 2026, 4:00 PM UTC
Minimum Speed	250B (200B above the Enchanted Forest)
Special NPC	Alien Ferryman
Ferryman quest	Catch 20 fish
Gate requirement	7 unique Relics, fished up in the lake or Lagoon
New pets	14 total: 9 from normal play, 5 from the Alien Tidal Surge event
Boss-catching event	Every 30 minutes, 750 Nebuloth Krakens per window
New mutation	Dark Matter (1,750 Void Pearls)
Codes	None. Any “Alien Biome code” is fake

What Speed Do You Need for the Alien Biome?

You need 250B Speed at minimum. That is a big jump from the 50B the Enchanted Forest asks for, and it is also well above what players guessed before launch, when estimates floated between 125B and 180B. Treat any older number you see as outdated.

The sign on the wall is only the entry ticket, though. Heavier eggs slow your carry on the run home, so in practice you want a cushion above 250B before you start farming the better nests. Landing exactly on the line works for a lucky grab, not for a repeatable income loop.

If you are still climbing, the usual levers apply: the treadmill, your trail multipliers, and the new Moonbloom and Alien Trail Speed multipliers. Leave the treadmill running while you do something else and you will close the gap faster than you expect.

Getting Past 250B Without Burning Hours

Reaching the biome is a Speed problem, not a puzzle. Two habits help most:

• Stack multipliers before you grind. A trail or boost bought early multiplies every hour you spend afterward.
• Farm the biome you already clear comfortably. Failed runs cost more time than extra treadmill minutes ever will. Players who push into the Alien Planet too early tend to lose eggs on the way back and fall behind.

If you have not hit the Enchanted Forest yet, finish that climb first. Our Enchanted Forest guide covers the 50B step that leads here.

How Do You Start the Alien Ferryman Quest?

Once you hit 250B, look for the Alien Ferryman standing beside the gate on the right side of the biome. He only offers his quest to players who meet the Speed requirement, so if he is missing, check your number first.

1. Talk to the Alien Ferryman.
2. Take the rod he offers if you do not own a fishing rod already.
3. Cast into the water next to him.
4. Reel in 20 catches to finish the quest.

One practical note: every cast returns an item, and each item appears to count toward the 20. You are not hunting a specific fish, so keep casting and clicking. Wording on this can change after a patch, so if your counter behaves differently, trust what the quest panel shows.

Fishing works the same way it did in the Halloween event: click the water to cast, wait for a bite, then tap repeatedly until the catch lands.

What Is the Alien Lagoon, and What Can You Fish Up There?

Finishing the quest adds a Lagoon option to the Ferryman’s dialogue. Select it and he takes you to the Alien Lagoon, a hidden area that is separate from the biome gate (people mix the two up constantly).

In the Lagoon you can fish up:

• Void Pearls
• Alien Eggs
• Mutation items
• Relics

Void Pearls matter if you want the Dark Matter mutation. Collect 1,750 of them, then trade them in at the Ferryman’s mutation exchange tab. If you already collect UFO mutations, compare it with our Alien Mutation breakdown, which covers the Abducted effect and its 2.5x boost.

How Do You Open the Alien Gate in Steal an Egg?

The gate sits next to the Ferryman and needs seven unique Relics, each a different color. You can only get them by fishing, either from the small lake or from the Lagoon.

There is no published drop chance, and Relics are rare, so expect this to take a while. It is pure luck, not a skill check. The upside is that you are not wasting casts while you hunt: Void Pearls, Eggs, and Fishing Milestone rewards such as new rods, rare pets, and mutation consumables arrive along the way.

Once you hold all seven, place each Relic in its matching slot and the gate opens. The process feels a lot like the sealed door in the Enchanted Forest, and if you remember how that worked, our Wisp walkthrough shows the earlier version of this kind of quest.

What Is Behind the Gate? The Alien Fusion Chamber

Open the gate and you reach the Alien Fusion Chamber. Here you fuse two Divine pets, Obsidian Rex and Nebuloth Kraken, to get an Alien Egg. That egg can hatch a stronger Divine pet with high base income.

This is why the Kraken matters beyond bragging rights. It is a fusion ingredient, not just a trophy.

How Does the Nebuloth Kraken Event Work?

Every 30 minutes, a world boss-catching event starts inside the Lagoon. Players from across the game compete to catch the Divine Nebuloth Kraken, and only 750 exist globally per window. When they are gone, they are gone until the next cycle.

My advice is simple: be in the Lagoon with your rod out before the timer rolls over. Arriving late leaves you scrambling for leftovers. Exact catch odds have not been published, so there is no honest way to promise a number of casts.

Which Pets Can You Hatch From the Alien Planet?

The biome adds 14 new pets. Nine come from normal egg runs, and five belong to the Alien Tidal Surge event, when the area floods into an underwater world. A full per-pet breakdown with rarity and income will make sense once values settle, so check our Steal an Egg all pets list as it updates.

For the bigger timeline, see our Steal an Egg updates page, and if you came in from the previous event, our UFO event and Signal Decoder guides explain how the alien storyline started.

Quick Readiness Checklist Before You Walk In

• Speed comfortably above 250B, not just on the line
• A spare rod or the Ferryman’s loaner rod ready to go
• A plan for Void Pearls if you want Dark Matter
• Timer awareness for the 30-minute Kraken window

You can jump into Steal an Egg right now and test it yourself. Some details here, such as the guardian’s behavior and Relic odds, are still unconfirmed, and a patch could change the numbers, so check back after the next update.