Steal an Egg · Pet
Cosmic Gorilla
Cosmic Gorilla is a Mythic pet in Steal an Egg that earns a base $180K/s. It hatches from the Cosmic Gorilla Egg, stolen from the nests of the Cosmic biome.
EggCosmic Gorilla EggPet stats
Base income
$180K/s
Base weight
450 kg
Egg
Cosmic Gorilla Egg
Grow time
7m
Speed reward
+1.2M
Cash reward
$18M
Source
Cosmic
Biome nest
Rarity
Mythic
Where to get Cosmic Gorilla
Steal the Cosmic Gorilla Egg from the nests of the Cosmic biome, carry it back to your pen and let it hatch.
- Speed required
- 700M
- Guardian
- Cosmic Skeleton
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
Cosmic Gorilla income with mutations and size
| Mutation | 1× weight450 kg | 10× weight4,500 kg | 100× weight45,000 kg | 200× weight90,000 kg |
|---|---|---|---|---|
| No mutation×1 | $180K/s | $745K/s | $3.08M/s | $4.27M/s |
| Rainbow×3.5 | $630K/s | $2.61M/s | $10.8M/s | $14.9M/s |
| Parasite×3 | $540K/s | $2.23M/s | $9.24M/s | $12.8M/s |
| Fractured×2.75 | $495K/s | $2.05M/s | $8.47M/s | $11.7M/s |
| Scrambled×2.75 | $495K/s | $2.05M/s | $8.47M/s | $11.7M/s |
| Golden×2.5 | $450K/s | $1.86M/s | $7.7M/s | $10.7M/s |
| Spirit Bloom×2.5 | $450K/s | $1.86M/s | $7.7M/s | $10.7M/s |
| Bloom×1.25 | $225K/s | $931K/s | $3.85M/s | $5.33M/s |
| Silver×1.2 | $216K/s | $894K/s | $3.7M/s | $5.12M/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 Cosmic Gorilla compares
Neighbors by income in Cosmic (3 of 8):
Earns less
Cosmic Gecko
$30K/s(÷6 vs Cosmic Gorilla)
Earns more
La Vacca Saturno Saturnita
$2.2M/s(×12 vs Cosmic Gorilla)
Other Mythic pets
Cosmic Gorilla guide
Cosmic Gorilla holds the Mythic slot in the Cosmic biome. It earns $180K/s from a 7-minute egg, and that egg pays +1.2m Speed, the largest documented reward among the zone's eggs that grow in under ten minutes.
From nest to pen
- Build up to 700M Speed to enter Cosmic, the 9th biome.
- Take a Cosmic Gorilla Egg from the nests the Cosmic Skeleton guards. Eggs reset every 5 minutes.
- Wait 7 minutes for it to grow.
- Collect +1.2m Speed and $18m.
The short eggs of Cosmic, side by side
- Centapede: 2m, +960k Speed, $1.5K/s
- Cosmic Gecko: 4m, +1m Speed, $30K/s
- Cosmic Gorilla: 7m, +1.2m Speed, $180K/s
Each step up takes longer but earns several times more. The Gorilla is the best income of the three by far, and still a short enough wait to cycle during an active session. The next egg up, La Vacca Saturno Saturnita, earns more than twelve times as much but takes 13 minutes.
Rankings
It is 3rd of 8 in Cosmic, 13th of 23 Mythic pets, and 68th of 198 overall, counting from the lowest. Compared with the Prehistoric Mythic, the Ankylosaurus ($120K/s), it is a 50% raise.
With mutations and weight
Base weight is 450 kg. Following the formula the wiki documents (labelled beta), the estimates are about $450K/s for Golden, $630K/s for Rainbow, $745K/s at 10× base weight, $3.08M/s at 100× and $4.27M/s at 200×. Rainbow plus 100× weight would reach roughly $10.8M/s.
Sacrifice and Laboratory use
The Rift Sacrifice lists the Cosmic Gorilla as a Medium-tier requirement for Riftbeasts and Shattered Rift. In the Laboratory, it is the Mythic of the Cosmic egg on the Biohazard, Experimental and Unstable DNA banners.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.