Add server — Project Zomboid

Enter the address players connect to. We query it over Valve A2S on the spot, and if the server answers it joins the Project Zomboid listing immediately. Name, map, version and player counts are read from the server itself, so there is nothing else to fill in.

Before you add it

A server that is configured wrong is not rejected quietly — the form tells you which check failed. These are the ones that matter for Project Zomboid.

Valve A2S

How we query Project Zomboid. Default port 16261.

A2S_INFO

The query port must accept UDP from outside. Most hosts open it by default.

sv_setsteamaccount

Not needed for this check, but a server without it drops off Steam lists.

Query port

Equals the game port on almost every host. Fill the second field only if yours differs.

A public address

LAN and loopback addresses are refused: nobody else could join them.