Every egg in Mimic Egg Heist has a rarity, and some have a mutation on top. Both decide how long the egg takes to hatch and how much the pet inside earns. Here is the full list, straight from the game's settings as of the October 2026 update.
The 8 rarities
| Rarity | Hatch time | Income |
|---|---|---|
| Common | 5 seconds | x1 |
| Uncommon | 10 seconds | x2 |
| Rare | 20 seconds | x4 |
| Epic | 40 seconds | x8 |
| Legendary | 80 seconds | x16 |
| Mythic | 2.5 minutes | x40 |
| Secret | 5 minutes | x120 |
| Divine | 10 minutes | x500 |
A few things worth knowing:
- You only see an egg's rarity once you grab it. In the nest, every egg looks the same.
- When someone hatches a Legendary or anything rarer, the whole server hears about it.
- Bringing home a Legendary or better egg from an area also earns you that area's key shard for the Queen's Egg.
Mutations
On top of its rarity, a pet can come out mutated. Mutations multiply the income again.
| Mutation | Base chance | Income |
|---|---|---|
| Gold | 7% | x2 |
| Diamond | 2.5% | x4 |
| Rainbow | 0.5% | x10 |
| Pumpkin | Halloween only | x3 |
Pumpkin is the Halloween mutation. Until 1 November at 00:00 UTC, one egg in ten in every area is a Pumpkin egg, and every animal and rarity gets its own Pumpkin entry in the Index.
Weight
Every pet also has a weight in kg. Heavier pets earn a bit more, so two pets of the same animal and rarity can still differ.
Putting it together
A pet's income is its animal's value, times its rarity multiplier, times its weight bonus, times its mutation multiplier. A Rainbow Divine is x500 times x10: 5,000 times what a plain Common of the same animal and weight earns.
That is also why the Index is worth filling: 45 animals, 8 rarities and the mutations make a lot of entries to collect. See all areas and pets for the animals.