Eggs
Eggs are a core feature in Pet Simulator 99. Cracking an egg open gives you a random pet, and those pets follow you around, smashing breakables and collecting coins on your behalf. As of Update 68 there are 281 eggs that can be purchased with coins, spread across the game's worlds and special areas.
How Eggs Work
- Eggs are purchased with coins — each world uses its own coin currency.
- Every egg has its own pet pool: a common pet with a high hatch chance, rarer pets with lower odds, and often secret pets whose odds are hidden (shown as "??").
- Progressing through new areas unlocks new, more expensive eggs with stronger pets.
- Egg luck boosts (potions, upgrades, enchants, and similar bonuses) improve your odds of rarer pets, though exclusive eggs are not affected by luck.
Egg Categories
The 281 purchasable eggs break down across the four main worlds, with additional eggs outside the normal coin progression:
World 1 (Spawn World) Eggs — the starting progression eggs, unlocked area by area through Areas 1–99._.png)
World 2 (Tech World) Eggs — the second world's egg lineup, bought with Tech Coins.
World 3 (Void World) Eggs — the third world's egg lineup, bought with Void Coins.
World 4 (Fantasy World) Eggs — the newest world progression eggs, bought with Fantasy Coins.- Exclusive Eggs — special eggs outside the normal coin progression, purchased with Robux or earned from special rewards. Egg luck bonuses do not apply to these.
- Transferred Exclusive Eggs — older exclusive eggs carried forward from earlier updates and events.
Permanent Event Eggs — eggs from permanent side worlds such as the Fishing World (full table below).- Event Eggs — time-limited eggs that appear only during events; see the Event Eggs list for the full history.
Permanent Event Eggs: Fishing World
The Fishing World has its own permanent egg lineup bought with 
Fishing World coins. Each egg's most common pet becomes the featured rare pet of the next egg up the chain.
| Egg | Cost | Pets |
|---|---|---|
 Ahoy Egg | 250 |  Pirate Dog (90%),  Captain Octopus (10%),  Skeleton Shark (??) |
 Forgotten Egg | 500 | Captain Octopus (90%), Skeleton Shark (10%),  Leafy Seahorse (??) |
 Twisted Egg | 1,000 | Skeleton Shark (90%), Leafy Seahorse (10%),  Seamine Pufferfish (??) |
 Mystical Egg | 2,000 | Leafy Seahorse (90%), Seamine Pufferfish (10%),  Mystical Whale (??) |
 Kraken Egg | 4,000 | Seamine Pufferfish (100%), Mystical Whale (??),  Rogue Squid (??),  Anglerfish (??),  Krakling Kraken (??),  Huge Pirate Dog (??) |
 Frozen Egg | 6,500 |  Snow Crab (100%), Mystical Whale (??), Rogue Squid (??), Anglerfish (??),  Beluga Whale (??), Huge Pirate Dog (??) |
Event Eggs
Beyond the permanent lineup, many eggs have only been obtainable during limited-time events. These rotate out when their event ends, so their pets often become trade-only afterwards. Refer to the Event Eggs list for a full history of time-limited eggs.