Cosmic Skeleton Boss
45M/sSecret#61 highest incomeCosmic
Cosmic Skeleton Boss earns 45M/s base income in Steal An Egg, the #61 highest-earning of the 177 pets tracked. It is a Secret pet hatched from the Cosmic Skeleton Boss Egg in the Cosmic biome. Hatching it also pays out +1.6m Speed, $4.5b. The egg takes 2h 30m to hatch. Income here is the base rate as of 19 October 2026; a color mutation and a bigger size roll multiply it, see the table below or the income calculator. Steal An Egg has no trade window, pets can only be gifted one way, so anyone offering to “trade” for your Cosmic Skeleton Boss is asking you to give it away.
Cosmic Skeleton Boss income with every mutation
Base income times the color mutation multiplier, before any size bonus:
| Mutation | Multiplier | Cosmic Skeleton Boss income |
|---|---|---|
| Rainbow | ×3.5 | 158M/s |
| Parasite | ×3 | 135M/s |
| Fractured | ×2.75 | 124M/s |
| Scrambled | ×2.75 | 124M/s |
| Golden | ×2.5 | 113M/s |
| Spirit Bloom | ×2.5 | 113M/s |
| Bloom | ×1.25 | 56.3M/s |
| Silver | ×1.2 | 54M/s |
Pets that earn about the same as Cosmic Skeleton Boss
Within 15% of Cosmic Skeleton Boss's base income:
| Pet | Income | Rarity | Biome |
|---|---|---|---|
 Mecha Scorpio | 45M/s | Monster | Event |