diff --git a/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/SteamUser.java b/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/SteamUser.java
index 36e3b641..0e58cf5a 100644
--- a/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/SteamUser.java
+++ b/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/SteamUser.java
@@ -15,7 +15,9 @@
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesBase;
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver.CMsgClientSessionToken;
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver.CMsgClientWalletInfoUpdate;
+import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2;
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2.CMsgClientEmailAddrInfo;
+import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2.CMsgClientPlayingSessionState;
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2.CMsgClientUpdateMachineAuth;
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2.CMsgClientUpdateMachineAuthResponse;
 import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2.CMsgClientVanityURLChangedNotification;
@@ -109,6 +111,12 @@ public void accept(IPacketMsg packetMsg) {
                 handleMarketingMessageUpdate(packetMsg);
             }
         });
+        dispatchMap.put(EMsg.ClientPlayingSessionState, new Consumer<IPacketMsg>() {
+            @Override
+            public void accept(IPacketMsg packetMsg) {
+                handlePlayingSessionState(packetMsg);
+            }
+        });
 
         dispatchMap = Collections.unmodifiableMap(dispatchMap);
     }
@@ -432,4 +440,10 @@ private void handleMarketingMessageUpdate(IPacketMsg packetMsg) {
 
         client.postCallback(new MarketingMessageCallback(marketingMessage.getBody(), payload));
     }
+
+    private void handlePlayingSessionState(IPacketMsg packetMsg) {
+        ClientMsgProtobuf<CMsgClientPlayingSessionState.Builder> playingSessionState = new ClientMsgProtobuf<>(CMsgClientPlayingSessionState.class, packetMsg);
+
+        client.postCallback(new PlayingSessionStateCallback(playingSessionState.getTargetJobID(), playingSessionState.getBody()));
+    }
 }
diff --git a/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/callback/PlayingSessionStateCallback.java b/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/callback/PlayingSessionStateCallback.java
new file mode 100644
index 00000000..bca0feab
--- /dev/null
+++ b/src/main/java/in/dragonbra/javasteam/steam/handlers/steamuser/callback/PlayingSessionStateCallback.java
@@ -0,0 +1,42 @@
+package in.dragonbra.javasteam.steam.handlers.steamuser.callback;
+
+import in.dragonbra.javasteam.protobufs.steamclient.SteammessagesClientserver2.CMsgClientPlayingSessionState;
+import in.dragonbra.javasteam.steam.steamclient.callbackmgr.CallbackMsg;
+import in.dragonbra.javasteam.types.JobID;
+
+/**
+ * This callback is received when another client starts or stops playing a game.
+ * While {@link PlayingSessionStateCallback#playingBlocked}, sending {@link in.dragonbra.javasteam.enums.EMsg#ClientGamesPlayed}
+ * message will log you off with {@link in.dragonbra.javasteam.enums.EResult#LoggedInElsewhere} result.
+ */
+public class PlayingSessionStateCallback extends CallbackMsg {
+
+    private boolean playingBlocked;
+
+    private int playingAppID;
+
+    public PlayingSessionStateCallback(JobID jobID, CMsgClientPlayingSessionState.Builder msg) {
+        setJobID(jobID);
+
+        this.playingBlocked = msg.getPlayingBlocked();
+        this.playingAppID = msg.getPlayingApp();
+    }
+
+    /**
+     * Indicates whether playing is currently blocked by another client.
+     *
+     * @return true if blocked by another client, otherwise false.
+     */
+    public boolean isPlayingBlocked() {
+        return playingBlocked;
+    }
+
+    /**
+     * When blocked, gets the appid which is currently being played.
+     *
+     * @return the app id.
+     */
+    public int getPlayingAppID() {
+        return playingAppID;
+    }
+}