Core Keeper Crossplay: Supported Platforms and Game IDs

Check the platform combination

Support within a console family does not establish PlayStation-to-Xbox support. An older GOG-only store description conflicts with the publisher and developer’s cross-store guidance; the table follows their direct support information.

Join a PC host

1. Both players enable cross-play in Gameplay settings when using PC cross-store play.
2. The host selects a world and character and enters the world.
3. The host opens the pause menu with Esc and uses Copy game ID in the upper-left area.
4. The joining player selects Join Game on the main menu, pastes the ID into Enter Game ID, and selects Join.

The Game ID identifies the session. It is not a store activation code or an administrator key. The host needs to remain in the world for an ordinary hosted session.

Use a dedicated server when needed

For a persistent session, the official Core Keeper Dedicated Server is available under the Steam Library’s Tools filter. Start the tool to generate a Game ID; players still enter it through Join Game. The documented console command to stop the server is q.

Ordinary co-op does not require buying third-party hosting or deploying Docker. If joining fails, check the platform combination, cross-play setting, host status and copied ID first.