In Steal an Egg, a Roblox game where you hatch pets that earn income, a Dark Matter Mutation is an item that boosts a pet's earnings. Fish for Void Pearls in the Alien Planet Biome and trade 1,750 of them to the Alien Ferryman for one item. Apply it to an unhatched egg in your base, and it has a 30% chance to multiply that pet's income by ×2.5.
| Step | Where | Cost or chance |
|---|---|---|
| Get the Alien Rod | Alien Ferryman, Alien Planet Biome | Free |
| Unlock the Alien Lagoon | Catch 20 fish, then talk to the Ferryman again | Free |
| Earn Void Pearls | Fishing catches and Fishing Milestones | Free |
| Buy a Dark Matter Mutation item | Alien Trade-In with the Alien Ferryman | 1,750 Void Pearls |
| Get one from milestones | Fishing Milestones rewards | Milestone reward |
| Apply the item | Placed, unhatched egg in your base | 30% chance per item |
| Income boost | The pet hatched from that egg | ×2.5 income |
How to Reach the Alien Planet Biome and the Alien Ferryman
The Alien Planet Biome sits right after the Enchanted Forest. It lists a recommended speed of 250 billion, so it's worth training up toward that before you head in. The Alien Ferryman is the character who runs most of this route, so he's your first stop.
Once you're in the biome, the opening steps look like this:
- Find the Alien Ferryman. He stands by the water in the Alien biome.
- Take the Alien Rod he gives you for free. Equip it and cast into the water nearby.
- Catch 20 fish.
- Talk to the Ferryman again. He takes you across by boat to the Alien Lagoon.
The Lagoon is worth reaching early because you can fish there through the night without being sent back to spawn. That keeps your fishing going, and fishing is how you earn every Void Pearl you'll need.
Earning Void Pearls From Fishing and Fishing Milestones
Void Pearls are the currency of this route. You earn them from the fish you catch, and better rods bring in more per catch, so upgrading your rod speeds up the whole process. Every fish also counts toward Fishing Milestones, a progress track that starts at 5 fish and climbs to 5,000.
Each milestone you reach hands out a reward. Those rewards include Void Pearls, stronger rods, biome pets, and Dark Matter Mutation items. That last one matters, because milestones can give you the item itself, so you may not need to trade pearls for it at all. Since every catch moves you toward both pearls and milestones, fishing is the habit that moves this route forward.
Trading 1,750 Void Pearls for a Dark Matter Mutation
Once you have 1,750 Void Pearls, talk to the Alien Ferryman at the Alien Trade-In. The trade gives you one Dark Matter Mutation item. The item is a one-attempt consumable, so think of it as one try rather than a permanent upgrade.
Buying the item doesn't guarantee the mutation. The 30% chance applies to each item you use, which means you'll miss more often than you land. It helps to keep pearls saved for another attempt.
How to Apply a Dark Matter Mutation in Steal an Egg
Applying the item takes a few steps:
- Place an unhatched egg in your base.
- Equip the Dark Matter Mutation item.
- Walk up to the egg.
- Select the Apply Mutation interaction.
Each attempt has a 30% chance to succeed. If it fails, the item is used up and the egg doesn't get the mutation. If it works, the mutation stays with the egg, so the pet that hatches from it earns ×2.5 income. The item only works on an egg that hasn't hatched yet, which is why you place the egg first.
When to Use Your Dark Matter Mutation
The boost multiplies income, so it works best on a pet that already earns well. Save the item for your best egg, the one you'd hatch into your top earner, rather than a random egg.
Skip any egg that might be stolen from your base before it hatches, since a mutation on that egg would be wasted. A miss is gone, and there's no refund, so pick the egg first and spend the item second.
