Core Keeper GuidesGuides, database, map tools, and update pages
Multiplayer setup, shared saves, and server checks

Co-op & Server

Keep multiplayer simple enough to trust on every session.

Use this page when the problem is wider than one guide and the session is shared.

The point here is to keep invite flow, save ownership, and base support visible before anyone blames the game, the patch, or one narrow route.

What to check

Most co-op problems fall into a small set of repeat checks.

Invite flow

Make sure everyone is joining the same world and version first.

Best when the room exists but the session still feels split between players.

Save ownership

Decide who controls the main world, backup, and update checks.

Best when a shared save is drifting after a patch or a role change.

Shared base

Keep storage, food, and return flow simple enough for more than one player.

Best when the team keeps wasting time on the same support tasks.

Connection fixes

Check support and correction pages before assuming the game itself is broken.

Best when the symptom is broad and the cause may be setup, not gameplay.

Best next pages

Open the page that matches the shared-session problem first.

Subpages

Use these when the co-op problem already has a shape.

Shared base flow

If the run is shared, the base should be easy to read for everyone.

Spotlight

These update pages belong next to multiplayer and shared-save questions.