diff --git a/Barotrauma/BarotraumaClient/Source/GameMain.cs b/Barotrauma/BarotraumaClient/Source/GameMain.cs
index 61bb9fe4a..4938bb4e7 100644
--- a/Barotrauma/BarotraumaClient/Source/GameMain.cs
+++ b/Barotrauma/BarotraumaClient/Source/GameMain.cs
@@ -12,6 +12,9 @@ using System.Reflection;
 using GameAnalyticsSDK.Net;
 using System.Threading;
 using System.IO;
+using RestSharp;
+using System.Net;
+using System.Xml.Linq;
 
 namespace Barotrauma
 {
@@ -23,7 +26,13 @@ namespace Barotrauma
         public static FrameCounter FrameCounter;
 
         public static readonly Version Version = Assembly.GetEntryAssembly().GetName().Version;
-        
+
+        public static string SteamVersionUrl
+        {
+            get;
+            private set;
+        }
+
         public static GameScreen            GameScreen;
         public static MainMenuScreen        MainMenuScreen;
         public static LobbyScreen           LobbyScreen;
@@ -549,6 +558,63 @@ namespace Barotrauma
             }
         }
 
+
+        public void CheckSteamReleaseStatus()
+        {
+            CoroutineManager.StartCoroutine(WaitForVersionInfo());
+        }
+
+        IEnumerable<object> WaitForVersionInfo()
+        {
+            var client = new RestClient(Config.MasterServerUrl);
+            var request = new RestRequest("versioninfo.xml", Method.GET);
+            IRestResponse response = null;
+            client.ExecuteAsync(request,
+                (receivedResponse) =>
+                {
+                    response = receivedResponse;
+                    if (response.StatusCode != HttpStatusCode.OK) { return; }
+
+                    string xml = response.Content;
+                    XDocument doc = null;
+                    try
+                    {
+                        doc = XDocument.Parse(xml);
+                    }
+
+                    catch
+                    {
+                        int index = xml.IndexOf('<');
+                        xml = xml.Substring(index, xml.Length - index);
+                        doc = XDocument.Parse(xml);
+                    }
+                    if (doc?.Root != null)
+                    {
+                        SteamVersionUrl = doc.Root.GetAttributeString("steamversionurl", "");
+                    }
+                });
+            while (response == null)
+            {
+                yield return CoroutineStatus.Running;
+            }
+
+            if (!string.IsNullOrEmpty(SteamVersionUrl))
+            {
+                var msgBox = new GUIMessageBox("", 
+                    "This version of Barotrauma is no longer supported. You can get the latest version of Barotrauma on Steam. Do you want to open Barotrauma's Steam page on your web browser?",
+                    new string[] { "Yes", "No" });
+                msgBox.Buttons[0].OnClicked = (btn, userdata) =>
+                {
+                    Process.Start(SteamVersionUrl);
+                    return true;
+                };
+                msgBox.Buttons[0].OnClicked += msgBox.Close;
+                msgBox.Buttons[1].OnClicked += msgBox.Close;
+            }
+
+            yield return CoroutineStatus.Success;
+        }
+
         static bool waitForKeyHit = true;
         public CoroutineHandle ShowLoading(IEnumerable<object> loader, bool waitKeyHit = true)
         {
diff --git a/Barotrauma/BarotraumaClient/Source/Screens/ServerListScreen.cs b/Barotrauma/BarotraumaClient/Source/Screens/ServerListScreen.cs
index 04a119090..e2c451b7e 100644
--- a/Barotrauma/BarotraumaClient/Source/Screens/ServerListScreen.cs
+++ b/Barotrauma/BarotraumaClient/Source/Screens/ServerListScreen.cs
@@ -276,7 +276,7 @@ namespace Barotrauma
 
             if (client == null) yield return CoroutineStatus.Success;
 
-            var request = new RestRequest("masterserver2.php", Method.GET);
+            var request = new RestRequest("masterserver8.php", Method.GET);
             request.AddParameter("gamename", "barotrauma");
             request.AddParameter("action", "listservers");
             
@@ -291,7 +291,16 @@ namespace Barotrauma
                 {
                     serverList.ClearChildren();
                     restRequestHandle.Abort();
-                    new GUIMessageBox(TextManager.Get("MasterServerErrorLabel"), TextManager.Get("MasterServerTimeOutError"));
+                    if (string.IsNullOrEmpty(GameMain.SteamVersionUrl))
+                    {
+                        //Steam version is out and could not reach the master server
+                        // -> assume legacy master server has been deprecated
+                        new GUIMessageBox(TextManager.Get("MasterServerErrorLabel"), TextManager.Get("MasterServerTimeOutError"));
+                    }
+                    else
+                    {
+                        ShowMasterServerDeprecatedMessage();
+                    }
                     yield return CoroutineStatus.Success;
                 }
                 yield return CoroutineStatus.Running;
@@ -302,6 +311,7 @@ namespace Barotrauma
                 serverList.ClearChildren();
                 new GUIMessageBox(TextManager.Get("MasterServerErrorLabel"), TextManager.Get("MasterServerErrorException").Replace("[error]", masterServerResponse.ErrorException.ToString()));
             }
+
             else if (masterServerResponse.StatusCode != System.Net.HttpStatusCode.OK)
             {
                 serverList.ClearChildren();
@@ -309,11 +319,20 @@ namespace Barotrauma
                 switch (masterServerResponse.StatusCode)
                 {
                     case System.Net.HttpStatusCode.NotFound:
-                        new GUIMessageBox(TextManager.Get("MasterServerErrorLabel"),
-                           TextManager.Get("MasterServerError404")
-                                .Replace("[masterserverurl]", NetConfig.MasterServerUrl)
-                                .Replace("[statuscode]", masterServerResponse.StatusCode.ToString())
-                                .Replace("[statusdescription]", masterServerResponse.StatusDescription));
+                        //Steam version is out and server file wasn't found on the legacy master server 
+                        // -> assume legacy master server has been deprecated
+                        if (string.IsNullOrEmpty(GameMain.SteamVersionUrl))
+                        {
+                            new GUIMessageBox(TextManager.Get("MasterServerErrorLabel"),
+                               TextManager.Get("MasterServerError404")
+                                    .Replace("[masterserverurl]", NetConfig.MasterServerUrl)
+                                    .Replace("[statuscode]", masterServerResponse.StatusCode.ToString())
+                                    .Replace("[statusdescription]", masterServerResponse.StatusDescription));
+                        }
+                        else
+                        {
+                            ShowMasterServerDeprecatedMessage();
+                        }
                         break;
                     case System.Net.HttpStatusCode.ServiceUnavailable:
                         new GUIMessageBox(TextManager.Get("MasterServerErrorLabel"), 
@@ -338,7 +357,18 @@ namespace Barotrauma
             }
 
             yield return CoroutineStatus.Success;
+        }
 
+        private void ShowMasterServerDeprecatedMessage()
+        {
+            serverList.ClearChildren();
+            new GUITextBlock(new Rectangle(0, 0, (int)(serverList.Rect.Width * 0.8f), (int)(serverList.Rect.Height * 0.8f)),
+                "This version of Barotrauma is no longer supported and the legacy server list is no longer available.",
+                alignment: Alignment.Center, textAlignment: Alignment.Center,
+                style: "", parent: serverList, wrap: true)
+            {
+                CanBeFocused = false
+            };
         }
 
         private void MasterServerCallBack(IRestResponse response)