A letter tier for every animal would require Cash rates the developer has not published. This page is the comparison you can make from your own Farm.
Read these before rarity
Use the same units for every animal. If the game shows Cash per second, stay in Cash per second. Do not convert a color into a number.
| What to read | Why it changes the choice |
|---|---|
| Cash per second | The standing output. This is the value balance changes move first. |
| Time to bring the egg home | An animal you cannot place earns nothing. Count failed trips. |
| Gestation | A few seconds to several minutes, by rarity. A long timer occupies the enclosure. |
| Offline pay | Animals keep earning while you are away, so a steady rate compounds between sessions. |
| Index reward | The first unlock of that animal pays once. The amount scales with rarity and zone. |
Rarity is a reasonable first filter because rarer eggs are described as the point of digging deeper. It is not a verdict. A nearer animal you hatch every few minutes can beat a rarer one you lose on the path.
Match the trip to your Speed
First animals. Take eggs from the closest zone you can clear and return. The goal is an animal that pays while you train, plus the Index unlock. Do not make a far zone your first route.
Once most returns succeed. Hatch the highest earner in a zone you already finish. Skip an egg whose gestation is longer than the time you plan to play if the enclosure slot is the bottleneck.
A deep push. Go farther only when Speed keeps the egg. Rebirth Worlds add mutated eggs that earn more than the standard animal. Their names are not published, so "best animal" cannot be a fixed name on this page.
What would change the order
- A balance change to income or hatch time.
- A new zone that makes today's far trip ordinary.
- A Rebirth that opens mutated eggs.
- A Speed gain that makes a previously unsafe zone reliable.
The experience listing was updated on 3 October 2026 without patch notes. Re-read the rate on your animals after an update instead of trusting an old screenshot.
There is no sell-price table in the sources used here, so this guide does not tell you to sell an animal. Keep what is earning unless the game itself shows a trade and a price.