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Yharnam Together

The guide

Install and set up
What you need, how to install Yharnam Together, what each part of the launcher's Co-op page is for, and how the other players reach the host.
Setup and the launcher
Every screen of Yharnam Together's setup and launcher: installing, the first start, finding or installing the game, the Co-op page, the settings tabs and the status bar.
Playing together
How to make a team in the game or join one in progress, travelling apart, chalice dungeons, the map and compass, what the party list shows, how going down and reviving work, and how to give items to a teammate.
How it works
The parts of Yharnam Together: the native PC port, the co-op code built into it, the patched map events and the server one player runs.
The server netcode
Why Yharnam Together replaced peer-to-peer with a server that owns the team's world: the game's native netcode, the UDP protocol, the reliability layer, team worlds and the native team lobby.
Build from source
Build the port, the server and the release of Yharnam Together on Windows, run the local checks and the multi-game test rig.
Credits and license
The projects Yharnam Together is built on, its GPL license, and its relationship to Sony Interactive Entertainment and FromSoftware (none).

Questions