Steal an Egg · Pet
Penguin
Penguin is a Rare pet in Steal an Egg that earns a base $140/s. It hatches from the Penguin Egg, stolen from the nests of the Snow biome.
EggPenguin EggPet stats
Base income
$140/s
Base weight
16 kg
Egg
Penguin Egg
Grow time
45s
Speed reward
+12.8K
Cash reward
$14K
Source
Snow
Biome nest
Rarity
Rare
Where to get Penguin
Steal the Penguin Egg from the nests of the Snow biome, carry it back to your pen and let it hatch.
- Speed required
- 170K
- Guardian
- Yeti
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
Penguin income with mutations and size
| Mutation | 1× weight16 kg | 10× weight160 kg | 100× weight1,600 kg | 200× weight3,200 kg |
|---|---|---|---|---|
| No mutation×1 | $140/s | $579.15/s | $2.4K/s | $3.32K/s |
| Rainbow×3.5 | $490/s | $2.03K/s | $8.39K/s | $11.6K/s |
| Parasite×3 | $420/s | $1.74K/s | $7.19K/s | $9.95K/s |
| Fractured×2.75 | $385/s | $1.59K/s | $6.59K/s | $9.12K/s |
| Scrambled×2.75 | $385/s | $1.59K/s | $6.59K/s | $9.12K/s |
| Golden×2.5 | $350/s | $1.45K/s | $5.99K/s | $8.29K/s |
| Spirit Bloom×2.5 | $350/s | $1.45K/s | $5.99K/s | $8.29K/s |
| Bloom×1.25 | $175/s | $723.94/s | $2.99K/s | $4.15K/s |
| Silver×1.2 | $168/s | $694.99/s | $2.88K/s | $3.98K/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 Penguin compares
Neighbors by income in Snow (1 of 8):
Earns more
Walrus
$600/s(×4.29 vs Penguin)
Other Rare pets
Penguin guide
Snow is the fifth zone, opening at 170K Speed and guarded by the Yeti, and the Penguin is the first pet on its list. It is a Rare earning $140/s, ranked 4th of 10 among Rares and 183rd of 198 overall, ahead of every earlier Rare, including the Jungle's Toucan at $110/s.
Penguin Egg
- Grow time: 45 seconds
- Reward: +12.8k Speed and $14k
- Base weight: 16 kg
That +12.8k Speed is more than most Jungle eggs pay, and it arrives in 45 seconds: roughly 284 Speed per second of growing, the best rate in Snow. For comparison, the Walrus egg works out to 240 per second and the Polar Bear's to about 133.
The next target, Volcano, requires 700K Speed. That would take about 55 Penguin eggs on rewards alone, so the Penguin is a supplement to treadmills and trails, not a replacement.
Rift fodder from Snow
Snow is one of the biomes feeding the Riftborn banner, and the wiki lists the Penguin in Riftborn's Easy sacrifice tier with Chimpanzee, Lava Gecko, Lava Frog, Parrotfish and Swordfish. Short egg, low value: it is exactly the kind of pet worth holding in reserve for when Riftborn is the active banner and the lobby Rift asks for three pets in exchange for a Rift Egg.
Mutation and size estimates
From the wiki's formula:
- Golden: about $350/s
- Rainbow: about $490/s
- 10 times base weight: about $579/s
- 100 times base weight: about $2.4K/s
- 200 times base weight: about $3.32K/s
- Rainbow at 100 times base weight: about $8.39K/s
With a 16 kg base, the 100x tier is a 1.6-tonne Penguin, more reachable than for heavier Snow pets like the Mammoth.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.