Pet System Overview
Pets accompany Cookies during runs, providing passive abilities from jelly generation to revives to score conversion. Unlike Cookies, Pets cannot run independently and do not have relay mechanics — one Pet pairs with one active Cookie at a time.
The Pet roster spans grades C through L plus an exclusive E-grade tier. Most Pets hatch from eggs; others come from events, flash sales, or objective completion.
Egg Hatching System
Three egg tiers exist at the Pet Shop: Common Egg (1 crystal), Rare Egg (10 crystals), and Extra Rare Egg (20 crystals). Higher tiers increase S-grade and above probability.
If you own a non-maxed Pet, hatching may upgrade it instead of granting a new one. Max all target Pets to level 8 to guarantee new pulls from Extra Rare eggs.
Egg hatch tables include C through S grades at varying rates. L-grade Pets require Extra Rare eggs with luck or event guarantees.
Event and Exclusive Pets
Gold Drop: Exclusive to the permanent Invite Event. Never replaced across seasons.
White Gold Drop: Starter Package purchase exclusive.
Frozen Wave Drop: Tower of Frozen Waves objective reward (300 milestones).
Brown Balloon: Limited-time event Pet with save and XP bonus.
Korea-exclusive Pets include cultural designs not available in the original LINE version.
Pet Level Progression
Pets level with coins like Cookies. Each level increases ability potency. Level 8 is the critical milestone — it unlocks associated Treasures and removes the Pet from duplicate hatch pools.
Prioritize leveling Pets that unlock Treasures you need for your current strategy before spreading levels evenly across your roster.
Frequently Asked Questions
How many Pets exist?
97 playable Pets in the current Classic roster, with 14 Korea exclusives and 2 unused Pets in game files.
Can Pets run alone?
No. Pets must accompany a Cookie. They provide passive abilities during the Cookie's run.
What are L-grade Pets?
Legend-grade Pets are the rarest tier with unique abilities. Hatch rates from Extra Rare eggs are extremely low.
Are event Pets permanently lost?
Expired event Pets cannot be obtained until Devsisters reruns the event. Some may never return.
What is the 99-crystal flash sale?
A rotating daily shop offering one specific S-grade Pet for 99 crystals. Only buy if you cannot hatch it and need it for Treasure unlock.