Steal an Egg · Pet
Voidmaw
Voidmaw is a Mythic pet in Steal an Egg that earns a base $50K/s. It hatches from the Riftborn Egg (Rift).
EggRiftborn EggPet stats
Base income
$50K/s
Base weight
13,000 kg
Egg
Riftborn Egg
Grow time
—
Speed reward
—
Cash reward
—
Source
Rift
Rift
Rarity
Mythic
Where to get Voidmaw
Voidmaw hatches from the Riftborn Egg, one of the Rift eggs. It is tied to the Rift event, not to a regular biome nest.
Other pets from the Riftborn Egg
Estimate based on the wiki formula
Voidmaw income with mutations and size
| Mutation | 1× weight13,000 kg | 10× weight130,000 kg | 100× weight1,300,000 kg | 200× weight2,600,000 kg |
|---|---|---|---|---|
| No mutation×1 | $50K/s | $207K/s | $856K/s | $1.18M/s |
| Rainbow×3.5 | $175K/s | $724K/s | $2.99M/s | $4.15M/s |
| Parasite×3 | $150K/s | $621K/s | $2.57M/s | $3.55M/s |
| Fractured×2.75 | $138K/s | $569K/s | $2.35M/s | $3.26M/s |
| Scrambled×2.75 | $138K/s | $569K/s | $2.35M/s | $3.26M/s |
| Golden×2.5 | $125K/s | $517K/s | $2.14M/s | $2.96M/s |
| Spirit Bloom×2.5 | $125K/s | $517K/s | $2.14M/s | $2.96M/s |
| Bloom×1.25 | $62.5K/s | $259K/s | $1.07M/s | $1.48M/s |
| Silver×1.2 | $60K/s | $248K/s | $1.03M/s | $1.42M/s |
Estimate based on the wiki formula (marked beta there): income = base × (weight ÷ base weight)^(37/60) × mutation, with diminishing returns above 125× the base weight. In-game values can differ. See mutations and the income calculator.
How Voidmaw compares
Neighbors by income in Rift (3 of 16):
Other Mythic pets
Voidmaw guide
Voidmaw is the cheapest Mythic the Rift offers, at $50K/s. Within its rarity that is in the lower part of the table (17th of 23 Mythic pets), slotting between the Snow biome's Mammoth at $42K/s and the Abyss Ocean's Orca at $80K/s. It is the 3rd lowest earner of the 16 Rift pets.
Fractured: the Rift's own mutation
What makes Rift pets interesting is that the same event that hands them out also sells a way to boost them. The timed Rift boss, which appears every 30 minutes, pays out Boss Tokens, and the Boss Shop sells a consumable Mutation Shard. Per the wiki:
- You interact with an egg in your pen to use it.
- It works on growing and fully grown eggs alike.
- It has a 10% chance to apply the Fractured mutation.
Fractured multiplies income by 2.75, so a Fractured Voidmaw would earn about $137.5K/s, more than Orca. The Boss Mastery track, filled by defeating Overlords, also rewards eggs that come pre-loaded with Fractured.
Getting the egg itself
Voidmaw comes from the Rift, which the wiki describes as a lobby sacrifice of 3 random pets for one exclusive Rift Egg, under banners that rotate every 3 hours. The wiki does not say which banner includes Voidmaw. Update 6 also notes the Rift Trade-In Machine was replaced by Dr. Scramble's Laboratory, without the Rift page saying how that affects the sacrifice.
Other estimates
With the wiki's formula and its listed 13,000 kg base weight: Golden about $125K/s, Rainbow about $175K/s, 10× weight about $207K/s, 100× about $856K/s and a Rainbow at 100× around $2.99M/s.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.