Anyone can host their own multiplayer servers through the Unturned Dedicated Server tool. This tool is available alongside Unturned in your Steam Library, but must be installed separately from the game.
Our online documentation explains how to create, configure, and run your own server.
FAQ
What operating systems can be used?
Servers can be hosted on Windows and Linux operating systems. There is no support for hosting on macOS devices.
How easy is it to create a server for me and my friends?
For most players, simply launching the Unturned Dedicated Server app from your Steam Library is enough to create a joinable server. You can customize your server to adjust difficulty settings, change the map, set a password, and more – by editing the server's configuration files.