Secret · Cosmic
Cosmic Skeleton Bossin Steal An Egg
$45M/second
Reported base rate; projections below inherit this record's evidence limits.
Pet record: Single-source · provisional · checked 2026-08-27
Single-source (Eldorado pet index). Twelve values across every tier matched independent sources exactly, but this particular figure has not been confirmed.
- Listed incomes
- #12/80
- In Secret
- #3/9
- In biome
- #4/8
Income with documented mutation multipliers
Show Cosmic Skeleton Boss's calculated mutation rates
Reported base × documented mutation factor; size held at 1×. These are projections, not separate measured variants.
| Mutation | Multiplier | Income / sec | Gain |
|---|---|---|---|
| None | 1× | $45M | — |
| Silver | 1.25× | $56.3M | +$11.3M |
| Bloom | 1.5× | $67.5M | +$22.5M |
| Golden | 2× | $90M | +$45M |
| Rainbow | 2.5× | $113M | +$67.5M |
| Spirit Bloom | 3× | $135M | +$90M |
Only mutations with a retained numerical multiplier are modeled; this is not every mutation available in the game. Size can change the result. The income calculator combines the modeled inputs.
How to get Cosmic Skeleton Boss
Cosmic Skeleton Boss hatches from eggs stolen in the Cosmic biome. That biome needs 700M Speed to enter, and the Dragon patrols it.
The listed entry figure does not establish a safe carrying speed. Check the entrance and your return route; we have not measured a universal safety margin. Plan a target using your actual training rate →
This egg never waits in a nest. As a Secret it can appear at an egg reset and is announced to the server, according to the linked spawn references. Other players can pursue the same egg. A reset does not guarantee a rare spawn. How egg spawns work → The published rarity-wide hatch band is several hours, up to about 12 hours; it is not an individually timed Cosmic Skeleton Boss result. Use the duration shown on your egg. Track it →
Biome entry: Cross-referenced · checked 2026-08-27
Listed references support this record. This is desk research, not a fresh in-game test; exceptions are noted below.
Where it sits
Cosmic Skeleton Boss ranks #12 of 80 numerical entries in our current dataset. Provisional figures are included; pets with unknown income are excluded. This is not a complete game-wide ranking. The next pet up is Cosmic Dragon at $60M/s. Directly below it is Tralaledon at $32M/s.
Compare your actual size and variant
Use Cosmic Skeleton Boss's displayed earnings for a real budget. The income calculatorcompares your line-up; the size guide explains why an assumed size factor cannot prove a pet's actual income.
Saving-time projections for Cosmic Skeleton Boss
Time = savings target ÷ reported base income. This assumes one unmutated Cosmic Skeleton Boss, constant earnings and no spending or interruption:
| To bank | Takes | Calculation scope |
|---|---|---|
| $1B | 22 seconds | Constant-rate projection |
| $1T | 6 hours 10 minutes | Constant-rate projection |
These projections do not validate offline limits, collection caps or server bonuses. To combine pets you already own, run your own line-up.
Listed Secret pets compared
Rarity is a poor guide to income on its own — the Secret band alone spans $3.5M/s to $145M/s. Here is where Cosmic Skeleton Boss actually sits among them.
| # | Pet | Found in | Income / sec |
|---|---|---|---|
| 1 | Stag | Cherry Blossom | $145MSingle-source · provisionalSource · 2026-08-27 |
| 2 | Cosmic Dragon | Cosmic | $60MCross-referencedSource · 2026-08-27 |
| 3 | Cosmic Skeleton Boss — this pet | Cosmic | $45MSingle-source · provisionalSource · 2026-08-27 |
| 4 | Tralaledon | Prehistoric | $32MSingle-source · provisionalSource · 2026-08-27 |
| 5 | T-Rex | Prehistoric | $25MSingle-source · provisionalSource · 2026-08-27 |
| 6 | Kraken | Abyss Ocean | $15MSingle-source · provisionalSource · 2026-08-27 |
| 7 | Cerberus | Volcano | $8MSingle-source · provisionalSource · 2026-08-27 |
| 8 | Yeti | Snow | $5MSingle-source · provisionalSource · 2026-08-27 |
| 9 | King Snake | Jungle | $3.5MSingle-source · provisionalSource · 2026-08-27 |
| — | Bomboclat Crocolat | Brainrot Egg | Not published |
| — | Centaur | Angels and Demons | Not published |
| — | Experiment #001 | Experiment Shop | Not published |
| — | Gargoyle | Angels and Demons | Not published |
| — | Mutant Shark | Titan Temple | Not published |
| — | Pure Jellyfish | Angels and Demons | Not published |
| — | RazorFang | Angels and Demons | Not published |
Cosmic Skeleton Boss sits 3 of 9 ranked entries in this band. The comparison uses reported base rates, including provisional figures. The tier list ranks by income instead.
Other Cosmic pets
Cosmic Skeleton Boss FAQ
How much does Cosmic Skeleton Boss earn in Steal An Egg?
The provisional reported base figure is $45M/s before size and mutation bonuses. Mutation projections multiply this figure by a sourced factor; they are calculated scenarios, not measurements of every variant.
Where do you get Cosmic Skeleton Boss?
By stealing its egg from the Cosmic biome, which needs 700M Speed to enter and is patrolled by the Dragon. As a Secret it never waits in a nest: a single rare egg can spawn at an egg reset, every 5 minutes, and the whole server is told its name and biome when it does. Be in Cosmic before the reset.
Is Cosmic Skeleton Boss a good pet?
It ranks #12 among 80 pets with numerical income entries in our dataset, and #3 among 9 ranked Secret entries. Unknown incomes are excluded and provisional figures are included. Collection difficulty, hatch odds and your existing pets also matter.
What we are less sure about
Single-source (Eldorado pet index). Twelve values across every tier matched independent sources exactly, but this particular figure has not been confirmed.
Record checked 2026-08-27. If the current game differs, report the value with its size, mutation, active bonuses and date so the comparison can be reviewed.
Sources and evidence limits
These are the references recorded for the data on this page. Check dates describe our source review, not a new game test. Calculations based on that data inherit its uncertainty.
- eldorado.gg — steal an egg all pets index
Recorded check dates: 2026-08-27
- beebom.com — all steal an egg biomes
Recorded check dates: 2026-08-27
- techwiser.com — steal an egg biomes
Recorded check dates: 2026-08-27
- beebom.com — steal an egg mutations guide
Recorded check dates: 2026-08-27
- beebom.com — steal an egg sakura incubator guide
Recorded check dates: 2026-08-27, 2026-09-07
- progameguides.com — complete steal an egg sakura incubator guide
Recorded check dates: 2026-09-07
- youtube.com — video 9wZOO0Y7xPk
Recorded check dates: 2026-09-07
- allthings.how — steal an egg eternal oni tiger bloom mutation
Recorded check dates: 2026-09-07
- timesaver.gg — steal an egg best pets
Recorded check dates: 2026-08-27
- stealaneggguide.wiki — secret eternal divine eggs
Recorded check dates: 2026-09-11
- eldorado.gg — steal an egg eggs list
Recorded check dates: 2026-09-11
- youtube.com — video g28j2_74n00
Recorded check dates: 2026-09-11
- lolga.com — steal an egg all eggs guide 2026 egg reset biomes best eggs
Recorded check dates: 2026-09-11
Multiple articles can repeat the same original report; agreement is not proof of independent measurement. Report a correction with a dated screenshot and the pet or egg variant.