MFB Multiplayer

This mod does not have synced enemies/NPC's, it allows for synced progression (flags, items, switches etc) but the in-game world will not always be synced between players. MFB Multiplayer was designed with speedruns and randomizer in mind rather than casual playthroughs, so you will likely encounter bugs if you try playing normally (though it should be playable at the very least).

Setup

The easiest way to connect is to have one user host a "NAT/Relay" lobby with "Manual Host" set to off, and have everyone else join with the set lobby name and password. If this fails then try the methods below.

Direct Connection:

To set up a direct connection, one user must host the connection with either a publicly accessible forwarded port, or through a shared VPN such as Radmin. the host must enter their IP and port (if using Radmin, enter the IP Radmin gave you and leave the port at its default setting) and then host the lobby. Then give the generated code starting with "TP1-" to the other users and they will be able to join the lobby.

NAT/Relay:

With Manual Host set to off, players will connect with NAT traversal using Cloudflare. With Manual Host set to on, you can connect with your own hosted relay built from this projects GitHub page, which first tries NAT traversal and falls back to the relay if necessary.

I've included Linux builds, but nearly all of the testing has been on Windows and macOS so far so I can't guarantee full compatibility.

AI Disclaimer

AI was used while making this mod.