/ Region identifier. This is an optional field, the default value is empty, meaning the "world" region
public static void SetRegion(string pszRegion) { InteropHelp.TestIfAvailableGameServer(); using (var pszRegion2 = new InteropHelp.UTF8StringHandle(pszRegion)) { NativeMethods.ISteamGameServer_SetRegion(pszRegion2); } }