diff --git a/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/game/state/GatheringParticipantCommunicationChannel.java b/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/game/state/GatheringParticipantCommunicationChannel.java
index 0481be20b..352f772fc 100644
--- a/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/game/state/GatheringParticipantCommunicationChannel.java
+++ b/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/game/state/GatheringParticipantCommunicationChannel.java
@@ -3,19 +3,26 @@ package com.gempukku.lotro.game.state;
 import com.gempukku.lotro.common.Token;
 import com.gempukku.lotro.communication.GameStateListener;
 import com.gempukku.lotro.game.PhysicalCard;
-import static com.gempukku.lotro.game.state.GameEvent.Type.*;
 import com.gempukku.lotro.logic.decisions.AwaitingDecision;
 import com.gempukku.lotro.logic.timing.GameStats;
 
 import java.util.*;
 
+import static com.gempukku.lotro.game.state.GameEvent.Type.*;
+
 public class GatheringParticipantCommunicationChannel implements GameStateListener {
     private List<GameEvent> _events = new LinkedList<GameEvent>();
     private String _self;
     private Date _lastConsumed = new Date();
+    private int _channelNumber;
 
-    public GatheringParticipantCommunicationChannel(String self) {
+    public GatheringParticipantCommunicationChannel(String self, int channelNumber) {
         _self = self;
+        _channelNumber = channelNumber;
+    }
+
+    public int getChannelNumber() {
+        return _channelNumber;
     }
 
     @Override
diff --git a/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/LotroGameMediator.java b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/LotroGameMediator.java
index 605ab1fa7..8e8a2cc88 100644
--- a/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/LotroGameMediator.java
+++ b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/LotroGameMediator.java
@@ -32,6 +32,7 @@ public class LotroGameMediator {
     private ReentrantReadWriteLock _lock = new ReentrantReadWriteLock(true);
     private ReentrantReadWriteLock.ReadLock _readLock = _lock.readLock();
     private ReentrantReadWriteLock.WriteLock _writeLock = _lock.writeLock();
+    private int _channelNextIndex = 0;
 
     public LotroGameMediator(LotroFormat lotroFormat, LotroGameParticipant[] participants, LotroCardBlueprintLibrary library, int maxSecondsForGamePerPlayer,
                              boolean noSpectators) {
@@ -287,7 +288,7 @@ public class LotroGameMediator {
         }
     }
 
-    public boolean processCommunicationChannel(Player player, ParticipantCommunicationVisitor visitor) {
+    public boolean processCommunicationChannel(Player player, int channelNumber, ParticipantCommunicationVisitor visitor) {
         String playerName = player.getName();
         if (_noSpectators && !_playersPlaying.contains(playerName))
             return false;
@@ -296,19 +297,24 @@ public class LotroGameMediator {
         try {
             GatheringParticipantCommunicationChannel communicationChannel = _communicationChannels.get(playerName);
             if (communicationChannel != null) {
-                for (GameEvent gameEvent : communicationChannel.consumeGameEvents())
-                    visitor.visitGameEvent(gameEvent);
+                if (communicationChannel.getChannelNumber() == channelNumber) {
+                    visitor.visitChannelNumber(channelNumber);
+                    for (GameEvent gameEvent : communicationChannel.consumeGameEvents())
+                        visitor.visitGameEvent(gameEvent);
 
-                String warning = _userFeedback.consumeWarning(playerName);
-                if (warning != null)
-                    visitor.visitGameEvent(new GameEvent(GameEvent.Type.W).message(warning));
+                    String warning = _userFeedback.consumeWarning(playerName);
+                    if (warning != null)
+                        visitor.visitGameEvent(new GameEvent(GameEvent.Type.W).message(warning));
 
-                Map<String, Integer> secondsLeft = new HashMap<String, Integer>();
-                for (Map.Entry<String, Integer> playerClock : _playerClocks.entrySet()) {
-                    String playerClockName = playerClock.getKey();
-                    secondsLeft.put(playerClockName, _maxSecondsForGamePerPlayer - playerClock.getValue() - getCurrentUserPendingTime(playerClockName));
+                    Map<String, Integer> secondsLeft = new HashMap<String, Integer>();
+                    for (Map.Entry<String, Integer> playerClock : _playerClocks.entrySet()) {
+                        String playerClockName = playerClock.getKey();
+                        secondsLeft.put(playerClockName, _maxSecondsForGamePerPlayer - playerClock.getValue() - getCurrentUserPendingTime(playerClockName));
+                    }
+                    visitor.visitClock(secondsLeft);
+                } else {
+                    visitor.visitGameEvent(new GameEvent(GameEvent.Type.W).message("You have joined this game in another window, please refresh your browser window (press F5) if you wish to continue playing in this window"));
                 }
-                visitor.visitClock(secondsLeft);
             } else {
                 visitor.visitGameEvent(new GameEvent(GameEvent.Type.W).message("Your browser was inactive for too long, please refresh your browser window to continue playing"));
             }
@@ -325,11 +331,16 @@ public class LotroGameMediator {
 
         _readLock.lock();
         try {
-            GatheringParticipantCommunicationChannel participantCommunicationChannel = new GatheringParticipantCommunicationChannel(playerName);
+            int number = _channelNextIndex;
+            _channelNextIndex++;
+
+            GatheringParticipantCommunicationChannel participantCommunicationChannel = new GatheringParticipantCommunicationChannel(playerName, number);
             _communicationChannels.put(playerName, participantCommunicationChannel);
 
             _lotroGame.addGameStateListener(playerName, participantCommunicationChannel);
 
+            visitor.visitChannelNumber(number);
+
             for (GameEvent gameEvent : participantCommunicationChannel.consumeGameEvents())
                 visitor.visitGameEvent(gameEvent);
 
diff --git a/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/ParticipantCommunicationVisitor.java b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/ParticipantCommunicationVisitor.java
index 40fd1187a..ac419c814 100644
--- a/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/ParticipantCommunicationVisitor.java
+++ b/gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/ParticipantCommunicationVisitor.java
@@ -5,6 +5,8 @@ import com.gempukku.lotro.game.state.GameEvent;
 import java.util.Map;
 
 public interface ParticipantCommunicationVisitor {
+    public void visitChannelNumber(int channelNumber);
+
     public void visitClock(Map<String, Integer> secondsLeft);
 
     public void visitGameEvent(GameEvent gameEvent);
diff --git a/gemp-lotr/gemp-lotr-web/src/main/java/com/gempukku/lotro/server/GameResource.java b/gemp-lotr/gemp-lotr-web/src/main/java/com/gempukku/lotro/server/GameResource.java
index 0b434cff1..9c71f3bf2 100644
--- a/gemp-lotr/gemp-lotr-web/src/main/java/com/gempukku/lotro/server/GameResource.java
+++ b/gemp-lotr/gemp-lotr-web/src/main/java/com/gempukku/lotro/server/GameResource.java
@@ -131,6 +131,7 @@ public class GameResource extends AbstractResource {
             @FormParam("participantId") String participantId,
             @FormParam("decisionId") Integer decisionId,
             @FormParam("decisionValue") String decisionValue,
+            @FormParam("channelNumber") int channelNumber,
             @Context HttpServletRequest request,
             @Context HttpServletResponse response) throws ParserConfigurationException {
         Player resourceOwner = getResourceOwnerSafely(request, participantId);
@@ -158,7 +159,7 @@ public class GameResource extends AbstractResource {
             Document doc = documentBuilder.newDocument();
             Element update = doc.createElement("update");
 
-            if (!gameMediator.processCommunicationChannel(resourceOwner, new SerializationVisitor(doc, update)))
+            if (!gameMediator.processCommunicationChannel(resourceOwner, channelNumber, new SerializationVisitor(doc, update)))
                 sendError(Response.Status.FORBIDDEN);
 
             doc.appendChild(update);
@@ -182,6 +183,11 @@ public class GameResource extends AbstractResource {
             _element = element;
         }
 
+        @Override
+        public void visitChannelNumber(int channelNumber) {
+            _element.setAttribute("cn", String.valueOf(channelNumber));
+        }
+
         @Override
         public void visitGameEvent(GameEvent gameEvent) {
             _element.appendChild(_eventSerializer.serializeEvent(_doc, gameEvent));
diff --git a/gemp-lotr/gemp-lotr-web/src/main/webapp/js/communication.js b/gemp-lotr/gemp-lotr-web/src/main/webapp/js/communication.js
index 825229d38..513ccc4a6 100644
--- a/gemp-lotr/gemp-lotr-web/src/main/webapp/js/communication.js
+++ b/gemp-lotr/gemp-lotr-web/src/main/webapp/js/communication.js
@@ -103,12 +103,14 @@ var GempLotrCommunication = Class.extend({
             dataType: "xml"
         });
     },
-    updateGameState: function(callback, errorMap) {
+    updateGameState: function(channelNumber, callback, errorMap) {
         $.ajax({
             type: "POST",
             url: this.url + "/game/" + getUrlParam("gameId"),
             cache: false,
-            data: { participantId: getUrlParam("participantId") },
+            data: {
+                channelNumber: channelNumber,
+                participantId: getUrlParam("participantId") },
             success: this.deliveryCheck(callback),
             error: this.errorCheck(errorMap),
             dataType: "xml"
@@ -119,22 +121,24 @@ var GempLotrCommunication = Class.extend({
             type: "GET",
             url: this.url + "/game/" + getUrlParam("gameId") + "/cardInfo",
             cache: false,
-            data: { cardId: cardId,
+            data: {
+                cardId: cardId,
                 participantId: getUrlParam("participantId") },
             success: this.deliveryCheck(callback),
             error: this.errorCheck(errorMap),
             dataType: "html"
         });
     },
-    gameDecisionMade: function(decisionId, response, callback, errorMap) {
+    gameDecisionMade: function(decisionId, response, channelNumber, callback, errorMap) {
         $.ajax({
             type: "POST",
             url: this.url + "/game/" + getUrlParam("gameId"),
             cache: false,
             data: {
+                channelNumber: channelNumber,
                 participantId: getUrlParam("participantId"),
                 decisionId: decisionId,
-                decisionValue: response},
+                decisionValue: response },
             success: this.deliveryCheck(callback),
             error: this.errorCheck(errorMap),
             dataType: "xml"
@@ -158,7 +162,7 @@ var GempLotrCommunication = Class.extend({
             cache: false,
             data: {
                 participantId: getUrlParam("participantId"),
-                deckName: deckName},
+                deckName: deckName },
             success: this.deliveryCheck(callback),
             error: this.errorCheck(errorMap),
             dataType: "xml"
diff --git a/gemp-lotr/gemp-lotr-web/src/main/webapp/js/gameUi.js b/gemp-lotr/gemp-lotr-web/src/main/webapp/js/gameUi.js
index 41431ed1d..cebb8391d 100644
--- a/gemp-lotr/gemp-lotr-web/src/main/webapp/js/gameUi.js
+++ b/gemp-lotr/gemp-lotr-web/src/main/webapp/js/gameUi.js
@@ -54,6 +54,7 @@ var GempLotrGameUI = Class.extend({
     chatBoxDiv: null,
     chatBox: null,
     communication: null,
+    channelNumber: null,
 
     settingsAutoPass: false,
     settingsAutoAccept: false,
@@ -658,21 +659,21 @@ var GempLotrGameUI = Class.extend({
     initializeDialogs: function() {
         this.smallDialog = $("<div></div>")
                 .dialog({
-            autoOpen: false,
-            closeOnEscape: false,
-            resizable: false,
-            width: 400,
-            height: 200
-        });
+                    autoOpen: false,
+                    closeOnEscape: false,
+                    resizable: false,
+                    width: 400,
+                    height: 200
+                });
 
         this.cardActionDialog = $("<div></div>")
                 .dialog({
-            autoOpen: false,
-            closeOnEscape: false,
-            resizable: true,
-            width: 600,
-            height: 300
-        });
+                    autoOpen: false,
+                    closeOnEscape: false,
+                    resizable: true,
+                    width: 600,
+                    height: 300
+                });
 
         var that = this;
 
@@ -687,11 +688,11 @@ var GempLotrGameUI = Class.extend({
 
         this.infoDialog = $("<div></div>")
                 .dialog({
-            autoOpen: false,
-            closeOnEscape: true,
-            resizable: false,
-            title: "Card information"
-        });
+                    autoOpen: false,
+                    closeOnEscape: true,
+                    resizable: false,
+                    title: "Card information"
+                });
 
         var swipeOptions = {
             threshold: 20,
@@ -857,6 +858,7 @@ var GempLotrGameUI = Class.extend({
     updateGameState: function() {
         var that = this;
         this.communication.updateGameState(
+                this.channelNumber,
                 function(xml) {
                     that.processXml(xml, true);
                 });
@@ -865,6 +867,7 @@ var GempLotrGameUI = Class.extend({
     decisionFunction: function(decisionId, result) {
         var that = this;
         this.communication.gameDecisionMade(decisionId, result,
+                this.channelNumber,
                 function(xml) {
                     that.processXml(xml, true);
                 });
@@ -984,6 +987,8 @@ var GempLotrGameUI = Class.extend({
     },
 
     processGameEventsXml: function(element, animate) {
+        this.channelNumber = element.getAttribute("cn");
+
         var gameEvents = element.getElementsByTagName("ge");
 
         var hasDecision = false;
@@ -1198,12 +1203,12 @@ var GempLotrGameUI = Class.extend({
 
         if (!this.replayMode) {
             this.smallDialog.dialog("option", "buttons",
-            {
-                "OK": function() {
-                    $(this).dialog("close");
-                    that.decisionFunction(id, $("#integerDecision").val());
-                }
-            });
+                    {
+                        "OK": function() {
+                            $(this).dialog("close");
+                            that.decisionFunction(id, $("#integerDecision").val());
+                        }
+                    });
         }
 
         $("#integerDecision").SpinnerControl({ type: 'range',
@@ -1241,12 +1246,12 @@ var GempLotrGameUI = Class.extend({
 
             if (!this.replayMode) {
                 this.smallDialog.dialog("option", "buttons",
-                {
-                    "OK": function() {
-                        that.smallDialog.dialog("close");
-                        that.decisionFunction(id, $("#multipleChoiceDecision").val());
-                    }
-                });
+                        {
+                            "OK": function() {
+                                that.smallDialog.dialog("close");
+                                that.decisionFunction(id, $("#multipleChoiceDecision").val());
+                            }
+                        });
             }
         } else {
             this.smallDialog.append("<br />");
@@ -1639,8 +1644,8 @@ var GempLotrGameUI = Class.extend({
                     $(div).find('LI.hover').removeClass('hover');
                     $(this).parent().addClass('hover');
                 }).mouseout(function() {
-            $(div).find('LI.hover').removeClass('hover');
-        });
+                    $(div).find('LI.hover').removeClass('hover');
+                });
 
         var getRidOfContextMenu = function() {
             $(div).remove();