Alien Biome in Steal an Egg — Update 12, Alien Lagoon and Nebuloth Kraken
Update 12 launched on November 7, 2026 with the Alien biome and Alien Lagoon fishing. The announcement lists 13 new pets and separately names 5 Tidal Surge exclusives, including a Divine. The two counts may overlap.
How do you start fishing in Alien Lagoon?
Talk to the alien NPC in the Alien biome to receive a rod and unlock Alien Lagoon. Fishing can reward Void Pearls, exclusive eggs, rare mutations and other rewards.
How do you catch Nebuloth Kraken?
Fish in Alien Lagoon during Cosmic Eclipse to obtain Nebuloth Kraken Egg. A new round starts every 30 minutes, with a quota of 750 catches shared globally.
Cosmic Eclipse in Steal an Egg: how to catch Nebuloth Kraken
What is Alien Tidal Surge?
Each in-game night, the Alien Biome can flood. When it does, explore Flooded Alien Planet and look for its exclusive eggs, including Prismare Egg. Cosmic Eclipse is the separate fishing competition for Nebuloth Kraken.
The exact flood chance and spawn odds are still unverified.
Jellynova · Flarefish · Tideler · Abyssjaw · Prismare
Tidal Surge in Steal an Egg: what to do and how to find Prismare
How much does Dark Matter cost?
1,750 Void Pearls · Alien Lagoon · 30%. Apply to an egg. ×2.5
Access and Speed
The location of the biome entrance and its access requirements are still being checked. The reported 250B Speed for unlocking fishing is unverified on the NPC screen. Biome access, the fishing unlock and Speed for escaping with eggs are separate.
100 fishing milestones
Fishing progression has 100 milestones, with new rods, exclusive eggs, mutations and boosts. Better rods earn more Void Pearls. The charge bar in the screenshot shows ×1.5 Luck. Individual rod names, unlock levels and rewards are still pending verification.
Alien Biome
Alien Biome
- Bloomfin · $550K/s · Bloomfin Egg
- Vexlet · $2M/s · Vexlet Egg
- Bloomspire · $4M/s · Bloomspire Egg
- Glacigon · $50M/s · Glacigon Egg
- Redmaw · $140M/s · Redmaw Egg
- Aurora Stag · $1.2B/s · Aurora Stag Egg
- Viridian Prowler · $3B/s · Viridian Prowler Egg
- Obsidian Rex · $12.5B/s · Obsidian Rex Egg
Flooded Alien Planet · Tidal Surge
- Jellynova · $100M/s · Jellynova Egg
- Flarefish · $300M/s · Flarefish Egg
- Tideler · $2.8B/s · Tideler Egg
- Abyssjaw · $5B/s · Abyssjaw Egg
- Prismare · $20B/s · Prismare Egg
Seven relic slots and the secret fusion room
Combine Obsidian Rex and Nebuloth Kraken in the Fusion Lab behind the door with seven colored relic slots in the Alien Biome. The fusion awards Xenorath Egg, which hatches into Xenorath. How to obtain each relic and how duplicates count are still unverified.
How to get Xenorath in Steal an Egg: 7 relics and Alien Biome fusion
How to get Xenorath in Steal an Egg: 7 relics and Alien Biome fusion · Xenorath
Related guides
Crystal Egg
Crystal Egg is a limited egg sold for Robux in the Featured section of the in-game shop. The chances below are per egg.