Steal An Egg Fusion Guide: How to Get Equinox and Aetheron

How does fusion work in Steal An Egg?

Fusion combines pets you already own into exclusive pets that cannot be hatched from any egg. Two systems exist: a general Fuse Machine for combining pets, and Shrine Fusion — a hidden area behind a waterfall — which produces the game’s two best fusion exclusives, Equinox and Aetheron. Fusing consumes the input pets, so every fusion is a trade: multiple strong pets for one stronger result.

What are the fusion pets worth?

The fusion exclusives sit at the very top of the income table — this is why the waterfall hideaway matters:

For context, Aetheron out-earns the best natural Divine (ArchAngel or World Burner at $5B/s) by nearly 40% — and the gap over everything else is measured in billions.

What are the Shrine Fusion recipes?

The two shrine recipes are fixed — each consumes two specific Eternal-or-Divine pets and produces a fusion-exclusive egg:

Both recipe inputs are Angels & Demons exclusives — Pegasus and ArchAngel come from the Light pool, Skeleton Horse and World Burner from the Dark pool. That makes the Angels & Demons event zone the mandatory farm before any shrine fusion.

Where is Shrine Fusion and how do I find it?

Shrine Fusion hides behind a waterfall on the map — the entrance is a concealed passage rather than a marked door. Walk into the water curtain and look for the gap; the shrine room inside hosts the fusion interface for the two exclusives. The general Fuse Machine, by contrast, is accessible in the open and handles ordinary pet combining.

What should I fuse and when?

Fusion is a late-game tool — feeding rare pets into it before your base income is stable sets you back. Sensible rules:

• Fuse duplicates first. Losing your only copy of a top earner to make a fusion pet leaves a hole in your income while you rebuild.
• Do not rush Equinox. Its $1.8B/s matches a natural Divine hatch — worth it as a stepping stone, not worth gutting your pen for.
• Aetheron is the finish line. Save the fuse for when your income can absorb losing the inputs — it is the last pet you will ever need to work toward.

For the pets worth keeping versus feeding into the machine, cross-check the best pets tier list, the full pets index, and the mutation multipliers — a mutated input is often worth more alive than fused.