Steal an Egg · Pet
Stacked Turtle
Stacked Turtle is a Cosmic pet in Steal an Egg that earns a base $12M/s. It hatches from the Experimental Egg (Experimental Egg).
EggExperimental EggPet stats
Base income
$12M/s
Base weight
300 kg
Egg
Experimental Egg
Grow time
—
Speed reward
—
Cash reward
—
Source
Experimental Egg
Special egg
Rarity
Cosmic
Where to get Stacked Turtle
Stacked Turtle hatches from the Experimental Egg, part of the Experimental 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.
Other pets from the Experimental Egg
Estimate based on the wiki formula
Stacked Turtle income with mutations and size
| Mutation | 1× weight300 kg | 10× weight3,000 kg | 100× weight30,000 kg | 200× weight60,000 kg |
|---|---|---|---|---|
| No mutation×1 | $12M/s | $49.6M/s | $205M/s | $284M/s |
| Rainbow×3.5 | $42M/s | $174M/s | $719M/s | $995M/s |
| Parasite×3 | $36M/s | $149M/s | $616M/s | $853M/s |
| Fractured×2.75 | $33M/s | $137M/s | $565M/s | $782M/s |
| Scrambled×2.75 | $33M/s | $137M/s | $565M/s | $782M/s |
| Golden×2.5 | $30M/s | $124M/s | $513M/s | $711M/s |
| Spirit Bloom×2.5 | $30M/s | $124M/s | $513M/s | $711M/s |
| Bloom×1.25 | $15M/s | $62.1M/s | $257M/s | $355M/s |
| Silver×1.2 | $14.4M/s | $59.6M/s | $246M/s | $341M/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 Stacked Turtle compares
Neighbors by income in Experimental Egg (2 of 5):
Earns less
Wheel Hamster
$450K/s(÷27 vs Stacked Turtle)
Earns more
Three Headed Chicken
$165M/s(×14 vs Stacked Turtle)
Other Cosmic pets
Stacked Turtle guide
Stacked Turtle is the second-lowest earner of the Experimental Egg, and its $12M/s lands it in familiar company: Koi from Cherry Blossom earns the same, and Mantaris from Titan Temple makes $11M/s. Both of those are pets the Experimental banner accepts.
Trading into the Experimental banner
Dr. Scramble's Laboratory came with Update 6, taking over from the Rift Trade-In Machine. The Experimental banner draws from Cosmic, Cherry Blossom and Titan Temple eggs and asks for pets by rarity, for example:
- Cosmic Egg: Centapede (Epic), Cosmic Gecko (Legendary), Cosmic Gorilla (Mythic), La Vacca Saturno Saturnita (Cosmic)
- Cherry Blossom Egg: Crane, Salamander, Red Panda, then Koi and Snowy Owl at Cosmic
- Titan Temple Egg: Crustacia and Spideron, Bladehide, then Mantaris and Rhinotaur at Cosmic
Update 6 also lets you hand in eggs directly and made pity guarantee the top reward. Pulling a Stacked Turtle roughly replaces a Koi or Mantaris; the gain comes from the pets above it.
The rest of the egg
- Wheel Hamster, Mythic, $450K/s
- Stacked Turtle, Cosmic, $12M/s
- Three Headed Chicken, Cosmic, $165M/s
- Eyeball Crab, Secret, $825M/s
- Dreadstinger, Eternal, $2B/s
Stacked Turtle ranks tied with Koi for 9th of 28 Cosmic pets, and 93 of 198 pets earn more. The wiki lists no grow time or hatch reward.
Estimates
Base weight is 300 kg. Using the formula the wiki documents:
- Golden: about $30M/s
- Rainbow: about $42M/s
- 10x base weight: about $49.6M/s
- 100x base weight: about $205M/s
- Rainbow at 100x weight: about $719M/s
With the Experiment Shop's Scrambled Mutation (x2.75, 10% chance per use), a plain Stacked Turtle would reach about $33M/s. A heavy 100x copy would already beat a plain Three Headed Chicken.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.