Quick answer
No. Graveyard Keeper 2 has no co-op or online multiplayer. Every official store listing describes it as a single-player game: Steam lists it under Single-player only, and the PlayStation, Xbox and Nintendo stores all give a player count of one.[1][2][3][4]
What each official store says
| Store | Player information on the listing | Other online features mentioned |
|---|---|---|
| Steam | Single-player | Steam Achievements, Trading Cards, Steam Cloud, Family Sharing[1] |
| PlayStation Store (PS4/PS5) | 1 player | Account needed for online features; no multiplayer mode listed[2] |
| Xbox Store (Xbox One, Series X/S) | Single player | Achievements; cloud play for Game Pass members who own the game[3] |
| Nintendo eShop (Switch 2) | Single player | Save Data Cloud with Nintendo Switch Online[4] |
The developer's own FAQ on the Steam forum covers platforms, languages, Steam Deck and the pre-order bonus, but does not announce any co-op mode.[5]
Has co-op been promised for later?
We found no official statement promising co-op after launch. The official FAQ does not list it, and the store pages above describe the released game only.[5][1] If that changes, it would appear first on the Steam news page and in the developer FAQ, so those are the two places worth checking.
What about mods?
Co-op is not part of the official game on any store listing.[1] If you come across a fan-made multiplayer mod, treat it as unofficial: it is not supported by Lazy Bear Games or tinyBuild, and a game update can break it. Back up your save before trying one.
If you want to play "together" anyway
These are workarounds, not multiplayer features:
- Family Sharing on Steam lets another account in your Steam family play the game on their own save.[1]
- Cloud saves (Steam Cloud, Nintendo Switch Online) let one person continue the same save on another device, one person at a time.[1][4]
- Couch "advisor" play works well in a management game like this: one person holds the controller, the other plans routes, recipes and weekly days.