Steal an Egg Alien Biome: Pets, Fishing, Relics and Xenorath

The Steal an Egg Alien Biome asks more of players than any area before it, pairing a steep speed gate with an egg pool packed with Divine pets. Progress here runs through a fishing rod as much as a treadmill, and several of the rarest Alien pets come straight out of the water.

Pets, fishing, and relics all connect inside the biome. Relics pulled from the water open a sealed gate, and the altar behind that gate fuses the strongest pet in the Alien lineup. Each step below follows the order players reach it, from Pete's ship raid to the final Xenorath fusion.

Steal an Egg Alien Biome Summary

• Pete's spaceship raid opens the Alien Planet portal and hands every player a free Rainbow Sproutling

• The Alien Biome eggs need 250B speed and sit directly past the Enchanted Forest, a five-fold jump from the previous area

• The Alien Trail gives x25 speed, the highest multiplier of any trail in the game

• The Pet Index holds 14 Alien pets, split between regular Alien eggs and Alien Tidal Surge eggs that appear on flooded nights

• The Alien Ferryman hands out the Alien Rod, and each cast lands Void Pearls, an Alien egg, a Dark Matter Mutation, or a relic

• Fishing Milestones run from 5 to 5,000 fish, paying out four extra rods, seven pets, Void Pearls, and Dark Matter Mutations

• Catching 20 fish opens the Alien Lagoon, an AFK spot where night never sends players back to spawn

• The Cosmic Eclipse at :25 and :55 spawns the Divine Nebuloth Kraken, with 750 catches shared across every server

• All 7 colored relics open the Relic Gate, where Obsidian Rex and Nebuloth Kraken fuse into the Divine Xenorath

• The Alien Trade-In swaps 1,750 Void Pearls for one Dark Matter Mutation worth x2.5

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What Is the Alien Biome in Steal an Egg

The Alien Biome sits directly past the Enchanted Forest and its egg sign recommends 250B speed for every steal. The requirement lands at five times the 50B Enchanted Forest gate, so most players arrive here well after clearing every earlier biome.

The Pet Index gives the area its own Aliens page with 14 slots, and each pet stays hidden as a silhouette until a player finds it. Ground eggs, fishing catches, milestone rewards, and a nightly event all feed into that page.

Nightfall still sends players in the main biome back to spawn, the same reset every other area follows. The Alien Tidal Surge can hit on any night and floods the whole biome into an underwater version with 5 exclusive pets, one of them a new Divine.

How to Open the Alien Biome Portal

Speed alone does not get players into the Alien Biome. Paranoid Pete's spaceship quest comes first, and the portal past the Enchanted Forest stays shut until players clear it.

The quest objective reads FIX PETE'S SHIP, and glowing ship parts sit scattered around the area for players to pick up and install.

Players clear the raid in a fixed order.

• Collect and install all five ship parts: The checklist asks for a Satellite Dish, an Antenna, an Engine, a Left Wing, and a Right Wing, and the ship refuses to launch with any piece missing.

• Board the ship and chase down the Mothership: Players steer with A and D to dodge rocks and pink projectiles, then hold click to fire until the Mothership's 1,064 health runs out.

• Ride out the crash landing: A final rocket from the Mothership sends Pete's ship crashing onto the home island, and a short reward scene plays.

• Walk through the Alien Planet portal: The portal opens past the end of the Enchanted Forest once the cutscene finishes.

Clearing the raid also drops a free Rainbow Sproutling straight into the inventory. Every player walks into the biome with one Alien pet already earning before a single egg run.

Players under 250B speed should still finish the raid early, since portal access and the Sproutling reward ignore the speed gate. Egg runs can wait until training catches up to the sign beside the Alien eggs.

How to Reach the Alien Biome Speed Requirement

Treadmill training stays the main route to 250B, and the trail a player equips decides how fast each session pays off. Players coming straight from the Enchanted Forest usually need a long training stretch before the Alien gate opens.

The Alien Trail carries a x25 speed multiplier, ahead of the x20 Moonbloom Trail and every other trail in the shop. The trail costs $30Qa in cash or 1.9K Robux, which makes the cash route realistic only for players already earning heavily from Divine pets.

A full rundown of every gate sits in the biome speed requirements list, which helps players plan the climb from earlier areas. Speed carries over between biomes, so every treadmill session spent in the Enchanted Forest counts toward the Alien requirement.

All Alien Biome Pets and How to Get Them

Alien pets come from two separate egg pools, and a Tidal Surge decides which pool stays active. Regular nights and normal fishing pull from the standard Alien egg, and flooded nights swap in a different set entirely.

Every known Alien Biome pet and its source appears below.

Prismare earns $20B per second at base, and Xenorath tops the Alien lineup at $25B per second. Every Alien pet also starts at a base weight of 8,500 kg, and heavier pets pay more, so weight rolls matter as much as rarity here.

Bloomfin and Flarefish appear in the egg pools, but the game has not displayed their rarity tier yet. Obsidian Rex deserves the most attention early, since the Xenorath fusion cannot happen without one.

Alien Biome Fishing With the Alien Ferryman

The Alien Ferryman stands at the dock beside a boat and gives players the Alien Rod to start fishing. Players holding the Halloween fishing rod from the Halloween events can use it here too.

The Ferryman turns away anyone below the same speed gate the Alien eggs use, so fishing and egg runs open up at the same point. Each cast lands on one of these four results.

The Alien egg catch follows the active pool, so a Tidal Surge night turns that 28% roll into a flooded egg with Prismare, Abyssjaw, and Tideler in the mix. Fishing during a surge gives players the most direct shot at the Divine Prismare without waiting on ground spawns.

Relics sit at the bottom of the odds, so collecting all seven takes hundreds of casts on average. Fishing can also land the x2.5 Abducted Mutation, which gives players a second mutation source alongside Dark Matter.

Alien Biome Fishing Milestones and Rod Progression

Every fish counts as one point toward Fishing Milestones, no matter what the cast produced. The track holds 29 rewards, and the biggest payouts cluster around new rods and pet drops.

The milestone rewards with the biggest impact follow.

Milestones in between hand out Void Pearls in growing batches, topping out at 15,000 pearls at 4,500 fish, plus several Dark Matter Mutations at set points. Players can track progress through the Void Pearls icon on the right side of the screen.

The Kraken Rod counts as the strongest alien rod in the game, and the Abyssjaw Egg beside it hands over a guaranteed Eternal. Reaching 5,000 fish takes serious time, so the Alien Lagoon becomes the natural place to grind it out.

Alien Lagoon and the Nebuloth Kraken Event

After 20 catches of any kind, the Alien Ferryman offers a ride to the Alien Lagoon. The lagoon works as a separate AFK fishing zone, and night never resets players back to spawn there.

Twice an hour, at :25 and :55, the Cosmic Eclipse starts in the lagoon and brings the Divine Nebuloth Kraken into the water. Players across every server share one pool of 750 Kraken catches, and once that count runs out, no more appear until the next eclipse.

Arriving a minute or two early gives players the best chance at a Kraken before the shared count drains. Players aiming for Xenorath need at least one Kraken, so the eclipse schedule shapes most fishing sessions.

Alien Biome Relic Gate and Xenorath Fusion

The Relic Gate sits on the right side of the Alien Biome, beside the Alien Ferryman. The gate stays sealed until a player fishes up all seven colored relics and places each one in its matching slot.

Players work through the gate in a set order.

• Collect all seven relic colors from fishing: Red, Orange, Yellow, Green, Blue, Purple, and Pink each drop from the 2% relic roll, and duplicates do not help.

• Place each relic in its matching gate slot: The gate opens into the Fusion Lab once every color sits in place.

• Bring an Obsidian Rex and a Nebuloth Kraken to the altar: The Fuse Altar combines the pair into a Xenorath Egg, which hatches the Divine Xenorath.

Obsidian Rex comes from the standard Alien egg pool, so steady fishing on regular nights covers that half of the recipe. The Kraken half depends entirely on the eclipse timer and the shared 750 limit.

Players who completed the Manor altar fusion will recognize the altar setup. The difference here lies in the gate, since the relic hunt adds a long fishing grind before the altar even becomes reachable.

Void Pearls and the Dark Matter Mutation

Void Pearls act as the Alien Biome currency, and they come from the 62% pearl roll, milestone payouts, and rod multipliers. The Alien Trade-In at the Ferryman converts 1,750 Void Pearls into one Dark Matter Mutation.

Dark Matter applies a x2.5 income multiplier and carries a 30% chance to land on a placed egg. A failed roll consumes the mutation, so players should save attempts for Divine eggs like Obsidian Rex or Prismare.

The x2.5 value sits below the x2.85 Enchanted Mutation, which still holds the edge for players chasing the highest payouts. Dark Matter wins on access, since fishing hands it out steadily without any event timer.

FAQs About the Steal an Egg Alien Biome

Final Words

The Alien Biome shifts Steal an Egg away from pure speed and stealing toward patience and timing. A player who fishes on a clear plan, watches the eclipse clock, and saves Dark Matter for Divine eggs will out-earn someone who hatches whatever lands on the ground.

The fishing track also rewards consistency over luck, since every cast pushes milestones forward regardless of the catch. Players who treat the lagoon as a long-term income source get the most out of the biome, from the Kraken Rod to a Xenorath on the plot.

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