The Alien Planet is a new biome introduced in Steal An Egg Update 12. It adds 14 new pets, a fishing quest, a hidden Lagoon, and a global boss Event. The pets look like a lot for one biome, but they come from two modes. During normal play, you can get 9 pets from the Alien biome and 5 during the Alien Tidal Surge event. That said, here's a complete Steal An Egg Alien Planet Biome guide.
What Is the Alien Planet Biome in Steal an Egg

Alien biome has a 250 billion minimum speed requirement; that's 200 billion more than the Enchanted Forest biome. I recommend you farm speed while AFK to prepare for the biome. Additionally, you can purchase either the Moonbloom or the Alien Trail to benefit from their speed multipliers. As mentioned earlier, you can obtain 14 Pets from this biome. We will add them as soon as possible.
How to Complete Alien Ferryman Quest to Unlock Lagoon

The biome has a special NPC called the Alien Ferryman. He is accessible to players who have reached the 250B speed requirement. To eligible players, he offers a quest to catch 20 fish.
If you meet the minimum speed, interact with this NPC to get a fishing rod. You can use it to fish in the lake right next to him. However, you don’t need to catch actual fish. Every cast gives you an item, and any item counts as one fish toward the quest. Once you’ve fished up 20 items, the Ferryman unlocks a new area called the Lagoon.
A new dialogue option called 'Lagoon' becomes available after completing the Alien Ferryman's quest. Once selected, he will take you to a new location called Alien Lagoon. You can fish in this area, as well. However, the main purpose of this area is the world event.
What Is the Nebuloth Kraken Boss Event
Every 30 minutes, a massive boss-catching event starts in the Alien Lagoon. Players from across the servers compete to catch the brand-new Divine rarity, Nebuloth Kraken. Only 750 Nebuloth Krakens are available globally in each 30-minute window, so you’ll need to be quick if you want one.
How to Get the Dark Matter Mutation

This biome also adds a new mutation, the Dark Matter. To get it, collect 1,750 Void Pearls from fishing, then trade them in for a Dark Matter mutation consumable. You can access this mutation exchange tab by interacting with the Alien Ferryman NPC after completing his quest.
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What Is the Alien Gate in Steal An Egg?
The Alien biome has a new gate like the Enchanted Biome. To open it, you will need to find 7 relics. You can collect these items only by fishing in the lake or the Lagoon. Since obtaining the relic is purely RNG-based, it may take some time to fish them up. Once you have all 7 relics, interact with the gate to open it and use the new Divine Fusion stage.
That's all you need to know about the Alien biome in Steal An Egg. Make sure to check out our Steal an Egg Wiki for more guides.
FAQs
The Alien Planet adds 14 new pets in total. During normal play, you can get 9 of them. The other 5 are exclusive to the Alien Tidal Surge event, when the biome floods and turns into an underwater world.
You need a minimum speed of 250 billion, which is 200 billion more than the Enchanted Forest requires.
To open the Alien gate, fish up 7 relics from the water in the Lagoon or the small lake area. The gate gives you access to the new Divine Fusion stage.