Prototype: Multiplayer Mod

is often the hardest part. The Derail Valley multiplayer mod warns clearly: "At present, assume all other mods are incompatible! Some mods may work, but many do cause issues and break multiplayer capabilities". Their roadmap prioritizes a fully functional vanilla multiplayer experience before addressing compatibility with third‑party mods.

For mods that need custom synchronization, are the standard mechanism. Satisfactory mods can define custom Remote Call Objects (RCOs) to register mod RPCs, as demonstrated in ExampleMod and Widget_MultiplayerDemoBuilding . Lethal Company's modding wiki provides a complete example using Unity Netcode's CustomMessagingManager with named messages, including serialization helpers and request/receiver methods. prototype multiplayer mod

When Prototype 2 launched in 2012 featuring a new protagonist, James Heller, fans hoped multiplayer would be included. Activision bypassed the feature again, leaving the responsibility entirely to the modding community. The Technical Nightmare of Modding Prototype is often the hardest part

If you are looking for the latest developments, the best approach is to join dedicated modding communities. Lethal Company's modding wiki provides a complete example

The Scav Prototype Multiplayer mod demonstrates the minimum viable connection: using LiteNetLib for transport and BepInEx for patching, the host listens on port 7777 (UDP and TCP) and clients connect via the host's IP address. The mod does nothing else initially—players simply exist in the same world.