Steal an Egg · Pet
Pure Jellyfish
Pure Jellyfish is a Secret pet in Steal an Egg that earns a base $225M/s. It hatches from the Pure Jellyfish Egg, stolen from the nests of the Angels & Demons biome.
EggPure Jellyfish EggPet stats
Base income
$225M/s
Base weight
10,000 kg
Egg
Pure Jellyfish Egg
Grow time
—
Speed reward
+30M
Cash reward
$22.5B
Source
Angels & Demons
Biome nest
Rarity
Secret
Where to get Pure Jellyfish
Steal the Pure Jellyfish Egg from the nests of the Angels & Demons biome, carry it back to your pen and let it hatch.
- Speed required
- 20B
- Guardian
- ArchAngel, World Burner, Aetheron
The guardian sleeps next to the nest; the faster you are, the easier it is to outrun it. Bigger eggs are worth more but slow you down. Eggs & guardians
Estimate based on the wiki formula
Pure Jellyfish income with mutations and size
| Mutation | 1× weight10,000 kg | 10× weight100,000 kg | 100× weight1,000,000 kg | 200× weight2,000,000 kg |
|---|---|---|---|---|
| No mutation×1 | $225M/s | $931M/s | $3.85B/s | $5.33B/s |
| Rainbow×3.5 | $788M/s | $3.26B/s | $13.5B/s | $18.7B/s |
| Parasite×3 | $675M/s | $2.79B/s | $11.6B/s | $16B/s |
| Fractured×2.75 | $619M/s | $2.56B/s | $10.6B/s | $14.7B/s |
| Scrambled×2.75 | $619M/s | $2.56B/s | $10.6B/s | $14.7B/s |
| Golden×2.5 | $563M/s | $2.33B/s | $9.63B/s | $13.3B/s |
| Spirit Bloom×2.5 | $563M/s | $2.33B/s | $9.63B/s | $13.3B/s |
| Bloom×1.25 | $281M/s | $1.16B/s | $4.81B/s | $6.67B/s |
| Silver×1.2 | $270M/s | $1.12B/s | $4.62B/s | $6.4B/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 Pure Jellyfish compares
Neighbors by income in Angels & Demons (10 of 18):
Other Secret pets
Pure Jellyfish guide
Most Laboratory requirements are Rare to Cosmic pets. The Pure Jellyfish is an exception: together with the Gargoyle, it is one of only two Secret pets that any Laboratory banner lists, both from the Angels & Demons egg on the Unstable DNA banner.
The Laboratory angle
Dr. Scramble's Laboratory runs a permanent banner that rotates through three egg pools and asks for pets tied to the active one. Unstable DNA is the only pool that draws from Angels & Demons eggs, and its list for that egg runs from the two Legendaries up to the Secret tier, where it names the Pure Jellyfish. If you are working through that banner, keeping a Pure Jellyfish on hand covers its highest-rarity slot for that egg.
Egg information
- Biome: Angels & Demons, 12th in the biome order
- Speed requirement: 20B
- Zone guardians: ArchAngel, World Burner and Aetheron
- Hatch reward: +30m Speed and $22.5b
- Base weight: 10,000 kg
- Income: $225M/s
The wiki gives the Gargoyle's egg a 3-hour grow time but has not recorded one for the Pure Jellyfish Egg yet, even though the two match on income, reward and base weight.
Ranking and the nightly switch
The Pure Jellyfish is tied with the Gargoyle for 9th of 18 in Angels & Demons and for 17th of 35 Secret pets, and 56 of 198 pets earn more overall. The zone changes every night between an Angel theme and a Demon theme, each with its own pet set. Which of the twin Secrets you see in the nests depends on that cycle.
Mutation and weight estimates
Applying the formula the wiki documents (with its calculator still marked beta):
- Golden: about $562M/s
- Rainbow: about $788M/s
- 10× base weight: about $931M/s
- 100× base weight: about $3.85B/s
- 200× base weight: about $5.33B/s
- Rainbow with 100× weight: about $13.5B/s
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.