Steal an Egg · Pet
Eye Bat #021
Eye Bat #021 is a Legendary pet in Steal an Egg that earns a base $115K/s. It hatches from the Eye Bat #021 Egg (Event).
EggEye Bat #021 EggPet stats
Base income
$115K/s
Base weight
1,234 kg
Egg
Eye Bat #021 Egg
Grow time
—
Speed reward
—
Cash reward
—
Source
Event
Event
Rarity
Legendary
Where to get Eye Bat #021
Eye Bat #021 is an event pet: it hatches from the Eye Bat #021 Egg, which comes from an event instead of a regular biome nest.
Estimate based on the wiki formula
Eye Bat #021 income with mutations and size
| Mutation | 1× weight1,234 kg | 10× weight12,340 kg | 100× weight123,400 kg | 200× weight246,800 kg |
|---|---|---|---|---|
| No mutation×1 | $115K/s | $476K/s | $1.97M/s | $2.73M/s |
| Rainbow×3.5 | $403K/s | $1.67M/s | $6.89M/s | $9.54M/s |
| Parasite×3 | $345K/s | $1.43M/s | $5.9M/s | $8.18M/s |
| Fractured×2.75 | $316K/s | $1.31M/s | $5.41M/s | $7.5M/s |
| Scrambled×2.75 | $316K/s | $1.31M/s | $5.41M/s | $7.5M/s |
| Golden×2.5 | $288K/s | $1.19M/s | $4.92M/s | $6.81M/s |
| Spirit Bloom×2.5 | $288K/s | $1.19M/s | $4.92M/s | $6.81M/s |
| Bloom×1.25 | $144K/s | $595K/s | $2.46M/s | $3.41M/s |
| Silver×1.2 | $138K/s | $571K/s | $2.36M/s | $3.27M/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 Eye Bat #021 compares
Neighbors by income in Event (1 of 17):
Earns more
Nibbles #013
$185K/s(×1.61 vs Eye Bat #021)
Other Legendary pets
Eye Bat #021 guide
Eye Bat #021 is the first reward on Dr. Scramble's Boss Mastery track: it needs only 10 Mastery Points, the lowest threshold of the five pets on that list.
Earning it
Update 6 brought Dr. Scramble back in his Mecha. Every 30 minutes he takes over the map, and each time you defeat him your Boss Mastery Points go up by 1. The wiki lists the rewards by points required:
- Eye Bat #021: 10
- Citadel Snail #007: 25
- Uncoiled Armadillo: 50
- Mecha Chompa: 75
- Pink Dragon Experiment #010: 100
Ten defeats means ten boss appearances. At one every 30 minutes, that is at least five hours of spawns if you catch every single one. Each victory also pays Samples, the currency of Dr. Scramble's Laboratory and Experiment Shop, and counts toward the separate 100-tier Boss Milestone track.
What it earns
Eye Bat #021 is a Legendary worth $115K/s. Among the 21 Legendary pets it ranks 2nd, so it is the second-highest Legendary earner in the game, and the lowest-earning of the 17 event pets the wiki lists. As an early milestone it is more a first step than a goal; the next reward, Citadel Snail #007, earns over a hundred times more.
Estimates, with a caveat
The wiki lists its base weight as 1,234 kg, the same figure it gives Citadel Snail #007, Uncoiled Armadillo, Mecha Chompa and Pink Dragon Experiment #010, so the weight-based numbers deserve extra caution. Using the wiki's formula:
- Golden: about $288K/s
- Rainbow: about $402K/s
- 10× weight: about $476K/s
- 100× weight: about $1.97M/s
- Rainbow at 100× weight: about $6.89M/s
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.