This is an unofficial fan guide. Multiplayer mods can affect saves and compatibility; review the author's current instructions before installing anything.
Fields of Mistria multiplayer is not confirmed by the collected official sources; the available co-op information is a community mod that says it is not feature complete. The mod author describes a separate relay, MOMI installation, and a Multiplayer settings tab. That is community-created functionality, not evidence that NPC Studio provides official online or local co-op. Back up saves and check the author's current page before experimenting.
Official support is not established
The collected official FAQ covers available platforms but does not confirm multiplayer or co-op. The research record has no official multiplayer announcement or official support instructions. That gap should be stated plainly rather than filled with an assumption based on another farming game. Official multiplayer support is To be confirmed.
What the community mod says
The collected Nexus Mods page is titled Multiplayer and says players can play with friends, while also stating that it is not 100 percent feature complete. It warns that some overworld states are not open or synced when a joining player has not unlocked them in their own save. Its instructions say to put the mod in a mods folder, install it with MOMI, run a relay, then find a Multiplayer tab in settings. Those instructions are attributed to the mod author and can change without notice.
Save and compatibility caution
Incomplete synchronization can affect more than a single session, particularly when players bring different progression states. The collected page asks players to report bugs or crashes through its comments or an unofficial Discord. That is useful context, but it is not a compatibility promise. Test with a backed-up save and only after reading the latest mod page, dependencies, and comments.
Avoid misleading wording
Do not say that Fields of Mistria has official multiplayer merely because a mod exists. Do not assume a community feature works across every operating system, game patch, or mod loadout. A guide should distinguish a feature confirmed by NPC Studio from a player-made experiment. Current mod version, host requirements, player limit, and security implications are To be confirmed from the author.
Sources
This page uses the collected Multiplayer community mod page, the MOMI page, and the official FAQ. The mod page was captured August 13, 2026 and was last shown as version 1. Read the live author documentation before installation.