Groundwork Simulator Co-op and Multiplayer Guide
Check Groundwork Simulator online co-op support, player count and the confirmed limits of the current multiplayer information.

Groundwork Simulator officially supports solo play and online co-op for up to four players. The published material confirms working on one site together, but does not yet define host migration, dedicated servers, cross-play or how ownership and progression are saved.
Step-by-step checklist
- Have the host confirm the current Steam build before inviting players.
- Assign excavation, hauling, water supply and wash-plant work so machinery does not block the same route.
- Keep loads and trailers clear of tight turns and shared processing areas.
- Until save ownership is documented, let the original host retain the main session.
What the store confirms
The official description says players can work solo or team up in online co-op and describes turning untouched ground into a functioning work site together. The current public overview gives a maximum of four players.
A practical four-player work split
The confirmed loop naturally separates into prospecting, excavation, transport and processing. This is a suggested coordination pattern rather than a locked class system: one player can test deposits, another operate the excavator, another haul material, and another maintain water and the wash plant.

Plan traffic before adding more machines
Trucks, trailers, loaders and excavators need room to turn on slopes and soft ground. Agree on a loading direction, a return lane and a parking area before several players bring machinery to the same cut.
Networking details still missing
The reviewed official sources do not state whether sessions use dedicated servers or player hosting, whether hosts can migrate, whether progress belongs to the host, or whether cross-play will exist. Those details should remain unknown until the developer publishes them.
What to verify on release day
Confirm the player limit on the live Steam feature list, then test inviting, reconnecting and saving with a disposable session before committing a long-running group site. Early Access patches may change networking behavior.