Buoyancy is singleplayer only.

Buoyancy is Minecraft puzzle game about removing colored buoys from buoy collections. The objective is to remove all colored buoys. You can remove all existing buoys of a specific color in a single move. But you can't have two or more of the same identical buoy collections, including single buoys.

There are 43 total sections for you to explore, and if there are no buoys present, either after solving the section's buoy puzzle or if there were no buoys to begin with, you will be able to collect the section's anchor as a progress marker.

A small fraction of the buoy puzzles are actually impossible.