How the merge math works
Two identical bodies create one body at the next stage. Moving up n stages therefore requires 2 to the power of n source bodies. For example, one Rain World theoretically requires eight Molten Cores.
This is a planning minimum, not a score forecast. Physics, fuse explosions, enemy attacks, and imperfect drops can increase what a real run needs.
What comes after Water Planet
The official page confirms that hidden disks can evolve worlds beyond the Water Planet, including golden and rainbow bodies. It does not publish the full post-Water-Planet names or recipes.
Use the Merge Planner to calculate any verified section of the normal ten-stage chain.
Frequently asked questions
How many stages are in the normal Primordial Sea chain?
There are ten named stages from Cosmic Dust through Water Planet.
What comes after Ocean World?
Two Ocean Worlds merge into a Water Planet in the normal chain.
Can worlds evolve beyond Water Planet?
Yes, but only the existence of further hidden-disk evolution is officially described; the full chain is not published.