Bring a collected egg to the hatch step
Collect an egg from beneath a lifted rock, then use the hatching option shown by the game. Follow the current on-screen instructions; the listing does not name a hatch button or a required wait time.
Add the result to your pet collection
The game describes hatching as a way to collect pets. Check the pet collection or equivalent game interface after the hatch to confirm what you received.
Keep expectations grounded
The public page mentions rare pets and rarer eggs, but provides no species list, rarity tiers, or probability table. One hatch does not establish the odds of another.
Do not trust unsupported guarantees
Treat claims of guaranteed rare pets, exact hatch percentages, or a best egg as unverified unless Crazay Future publishes them or they can be confirmed in the current experience.