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Steal an Egg Β· Event

Rift Event

Strange Rifts are tearing open across the map. Enter one, defeat the Overlord inside, and earn rewards that can't be obtained anywhere else in Steal an Egg.
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Rift Event
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Rift Boss Event

A Rift opens somewhere on the map every 30 minutes. Step inside, defeat the Overlord waiting there, and you'll earn Boss Tokens to spend in the Boss Shop.

Boss Shop: Tokens buy temporary boosts β€” Cash multipliers, Speed multipliers, Treadmill boosters β€” plus a consumable Mutation Shard that has a chance to apply a mutation to an egg already sitting in your pen.

Boss Mastery

Every Overlord you defeat also earns Boss Mastery Points. Progressing through the Mastery track unlocks increasingly valuable rewards, including eggs pre-loaded with the Fractured mutation.

Rift Sacrifices

A separate Rift sits permanently in the lobby. It asks for 3 random pets β€” hand them over, and it grants 1 exclusive Rift Egg in return.

The Permanent Rift

Separate from the timed boss encounters, a permanent Rift banner rotates through three egg pools. Each pool draws its pets from a specific set of biomes rather than being tied to a single zone:

BannerDraws From
RiftbornJungle, Snow, Volcano, and Abyss Ocean eggs
RiftbeastsVolcano, Abyss Ocean, Prehistoric, and Cosmic eggs
Shattered RiftPrehistoric, Cosmic, Cherry Blossom, and Titan Temple eggs

Pet Requirements

The Rift Sacrifice asks for pets tied to whichever banner is currently active. Each pool is split into three difficulty tiers based on how demanding the pets are to obtain:

Rotation: The active banner cycles roughly every 3 hours. Which pool is live determines which pets can currently drop from the permanent Rift.

Rift Pets

Frequently Asked Questions

Does applying a Mutation Shard work on eggs that are still growing? Yes β€” it works on both growing and fully grown eggs sitting in your pen, but there is only a 10% chance of it working.

Does pity reset when I leave or when the banner rotates? No β€” pity carries over regardless of leaving the game or the banner changing.

How do I actually use the Mutation Shard consumable? Walk up to an egg in your pen and interact with it β€” the shard has a 10% chance to apply the mutation to that egg.

What do I do once the boss faints mid-fight? The Overlord periodically faints during the encounter β€” when it does, hit its hand with the bat as it takes 100 damage with each hit.

Tip: You'll receive a batch of Boss Shards each time you complete a Rift fight β€” save them up and spend them on whichever Boss Shop boost fits your current progression best, rather than spending them the moment you get them.

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Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.