Steal an Egg · Pet
Gigantus
Gigantus is an Eternal pet in Steal an Egg that earns a base $1B/s. It hatches from the Gigantus Egg (Skeletal Egg).
Pet stats
Base income
$1B/s
Base weight
—
Egg
Gigantus Egg
Grow time
—
Speed reward
—
Cash reward
—
Source
Skeletal Egg
Special egg
Rarity
Eternal
Where to get Gigantus
Gigantus hatches from the Gigantus Egg, part of the Skeletal Egg group. According to the wiki, limited eggs like this do not spawn in the regular biome nests: they come from the Store or from special events such as Admin Abuse.
Estimate based on the wiki formula
Gigantus income with mutations and size
| Mutation | 1× weight | 10× weight | 100× weight | 200× weight |
|---|---|---|---|---|
| No mutation×1 | $1B/s | $4.14B/s | $17.1B/s | $23.7B/s |
| Rainbow×3.5 | $3.5B/s | $14.5B/s | $59.9B/s | $82.9B/s |
| Parasite×3 | $3B/s | $12.4B/s | $51.3B/s | $71.1B/s |
| Fractured×2.75 | $2.75B/s | $11.4B/s | $47.1B/s | $65.2B/s |
| Scrambled×2.75 | $2.75B/s | $11.4B/s | $47.1B/s | $65.2B/s |
| Golden×2.5 | $2.5B/s | $10.3B/s | $42.8B/s | $59.2B/s |
| Spirit Bloom×2.5 | $2.5B/s | $10.3B/s | $42.8B/s | $59.2B/s |
| Bloom×1.25 | $1.25B/s | $5.17B/s | $21.4B/s | $29.6B/s |
| Silver×1.2 | $1.2B/s | $4.96B/s | $20.5B/s | $28.4B/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 Gigantus compares
Neighbors by income in Skeletal Egg (7 of 10):
Earns less
Skeletal Giant Sloth
$900M/s(÷1.11 vs Gigantus)
Earns more
Skeletal Dunkleosteus
$2.5B/s(×2.5 vs Gigantus)
Other Eternal pets
Gigantus guide
Gigantus is the plain Eternal of the extinct-animal line: $1B/s, the highest regular earner among the extinct animals except Sabertooth ($5B/s). It's also the only pet in this group with no base weight on record.
Extinction Egg and the Skeletal re-roll
Update 6 introduced the paid Extinction Egg, which holds 6 extinct animals and has a small chance to re-roll each hatch into a rare Skeletal version. The wiki's pet table files Gigantus with the Skeletal Egg group under its own Gigantus Egg name. What's clear is that it doesn't come from a biome nest, so Speed thresholds and guardians are irrelevant. No grow time, hatch reward or re-roll odds are documented.
Its Skeletal form, Skeletal Gigantus, earns $4B/s. That's only 4x the plain pet, the smallest jump among the extinct animals shown alongside it:
- Terrorbird to Skeletal Terrorbird: about 6,800x
- Giant Sloth to Skeletal Giant Sloth: about 225x
- Dunkleosteus to Skeletal Dunkleosteus: about 8x
- Gigantus to Skeletal Gigantus: 4x
Rankings
- 11th of 24 Eternal pets; 26 of 198 pets earn more.
- Ties Rhinobear from the Unstable Egg at $1B/s.
- Above Gorilla King from Titan Temple ($880M/s) and Terra Snapper from the Luminous Egg ($750M/s).
Mutation estimates
Because the wiki has no base weight for Gigantus, the weight figures below are relative multiples rather than kg you can read on a card. With the formula the wiki documents:
- Golden: about $2.5B/s, the same as a plain Skeletal Dunkleosteus
- Rainbow: about $3.5B/s
- 10x base weight: about $4.14B/s, already past a plain Skeletal Gigantus
- 100x base weight: about $17.1B/s
- Rainbow at 100x weight: about $59.9B/s
With such a small Skeletal gap, a well-rolled plain Gigantus can be the better pet.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.