Secret shrine · Fuse Machine

Steal An Egg fusion

Two ways to fuse pets: the secret shrine in the last biome, which makes Equinox and Aetheron, and the Fuse Machine in your base, which turns 3 identical pets into a new egg.

The secret shrine

The last biome only exists at night. A shrine hides behind its biggest waterfall (a lava wall on Demon nights). There you fuse an Angel pet with its Demon counterpart to get Equinox or Aetheron, two pets no nest gives.

In-game screenshot: the fusion room and its two altars, Divine Fusion and Eternal Fusion

1. Reach Angels & Demons, at night

It is the last biome of the corridor (recommended speed: 20B). It only appears at night, on the Angel side or the Demon side.

2. Walk behind the biggest waterfall

On the left side of the biome, walk through the biggest waterfall (a lava wall on Demon nights): the shrine is behind it.

3. Put both pets on the altars

The Angel pet goes on the yellow altar, the Demon pet on the red altar. The shrine gives you a Fusion Egg, which hatches like any other.

Pegasus (Angels) and Skeleton Horse (Demons), two Eternal pets, make Equinox, an Eternal pet. Its egg takes 10h to hatch. In money, Equinox makes $1.8B/s in a single slot, versus $2.6B/s for both pets in two slots: fusing frees up a slot and gives you a pet no nest gives.

Divine fusion

Divine

ArchAngel

$5B/sAngels & Demons

Divine

World Burner

$5B/sAngels & Demons

Divine

Aetheron

$6.9B/sAngels & Demons

ArchAngel (Angels) and World Burner (Demons), two Divine pets, make Aetheron, a Divine pet. In money, Aetheron makes $6.9B/s in a single slot, versus $10B/s for both pets in two slots: fusing frees up a slot and gives you a pet no nest gives.

Pets you can use

Pet	Rarity	Income	Where to steal it
Pegasus	Eternal	$1.3B/s	Angels & Demons, on Angel nights
Skeleton Horse	Eternal	$1.3B/s	Angels & Demons, on Demon nights
ArchAngel	Divine	$5B/s	Angels & Demons, on Angel nights
World Burner	Divine	$5B/s	Angels & Demons, on Demon nights

Pets you can get

Eternal

Equinox

$1.8B/sAngels & Demons

Divine

Aetheron

$6.9B/sAngels & Demons

The limit

Above the altars, each fusion shows whether it is available. According to player guides, the Eternal fusion (Equinox) can only be done once per account: keep your heaviest Pegasus and Skeleton Horse for it. No limit is confirmed for the Divine fusion (Aetheron).

The Fuse Machine in your base

In your base, the Fuse Machine takes 3 pets of the same species, destroys them and gives you one egg of that species, which hatches like any other: a new roll, with no guarantee of something better. Fusing costs cash, and the price goes up with the pet. There is no cooldown: it works as soon as you have the 3 pets and the cash.

Prices reported by players: Walrus: $310K and Oni Tiger: $2.5T.

Careful: the mutation is not kept and weights do not add up. Example reported by players: three Scorpion pets of 457 kg, 256 kg and 247 kg gave one Scorpion of 86 kg.

FAQ

Where is the fusion room in Steal An Egg?

The secret shrine is in the last biome, Angels & Demons, which only exists at night: on the left side, walk through the biggest waterfall (a lava wall on Demon nights). The Fuse Machine is in your base.

Which pets can you fuse?

At the shrine: Pegasus + Skeleton Horse = Equinox; ArchAngel + World Burner = Aetheron. At the Fuse Machine: 3 pets of the same species, any species.

Is there a fusion limit?

Does fusion keep the mutation and weight?

At the Fuse Machine, no: according to player guides, the mutation is lost and weights do not add up. For the shrine, nothing is confirmed.

Recipes: community wiki. Shrine entrance, limit and Fuse Machine: player guides (sources on the About page). Income as of September 24, 2026.