diff --git a/modules/game/src/main/Event.scala b/modules/game/src/main/Event.scala
index 33fea59e7f..f203c3d905 100644
--- a/modules/game/src/main/Event.scala
+++ b/modules/game/src/main/Event.scala
@@ -12,6 +12,7 @@ sealed trait Event {
   def only: Option[Color] = None
   def owner: Boolean = false
   def watcher: Boolean = false
+  def troll: Boolean = false
 }
 
 object Event {
@@ -112,18 +113,20 @@ object Event {
     def data = JsString(pos.key)
   }
 
-  case class Message(author: String, text: String) extends Event {
+  case class Message(author: String, text: String, t: Boolean) extends Event {
     def typ = "message"
     def data = Json.obj("u" -> author, "t" -> escapeXml(text))
     override def owner = true
+    override def troll = t
   }
 
   // it *IS* a username, and not a user ID
   // immediately used for rendering
-  case class WatcherMessage(username: Option[String], text: String) extends Event {
+  case class WatcherMessage(username: Option[String], text: String, t: Boolean) extends Event {
     def typ = "message"
     def data = Json.obj("u" -> username, "t" -> escapeXml(text))
     override def watcher = true
+    override def troll = t
   }
 
   object End extends Empty {
diff --git a/modules/round/src/main/History.scala b/modules/round/src/main/History.scala
index 2fb5f8dc1d..d14c88e88a 100644
--- a/modules/round/src/main/History.scala
+++ b/modules/round/src/main/History.scala
@@ -37,7 +37,8 @@ private[round] final class History(ttl: Duration) extends Actor {
           data = e.data,
           only = e.only,
           owner = e.owner,
-          watcher = e.watcher) ~ { events.put(version, _) }
+          watcher = e.watcher,
+          troll = e.troll) ~ { events.put(version, _) }
       }
     }
   }
diff --git a/modules/round/src/main/Messenger.scala b/modules/round/src/main/Messenger.scala
index 049020f742..49e46d1969 100644
--- a/modules/round/src/main/Messenger.scala
+++ b/modules/round/src/main/Messenger.scala
@@ -44,28 +44,29 @@ final class Messenger(
     _ ← nextWR.nonEmpty ?? $insert(nextWR)
   } yield ()
 
-  def playerMessage(ref: PovRef, text: String): Fu[List[Event.Message]] =
+  def playerMessage(ref: PovRef, text: String, troll: Boolean): Fu[List[Event.Message]] =
     cleanupText(text).future flatMap { t ⇒
-      RoomRepo.addMessage(ref.gameId, ref.color.name, t) inject {
-        Event.Message(ref.color.name, t) :: Nil
+      (!troll ?? RoomRepo.addMessage(ref.gameId, ref.color.name, t)) inject {
+        Event.Message(ref.color.name, t, troll) :: Nil
       }
     }
 
   def watcherMessage(
     gameId: String,
     userId: Option[String],
-    text: String): Fu[List[Event.WatcherMessage]] = for {
+    text: String,
+    troll: Boolean): Fu[List[Event.WatcherMessage]] = for {
     userOption ← userId.??(UserRepo.byId)
     message ← userOrAnonMessage(userOption, text).future
     (u, t) = message
-    _ ← WatcherRoomRepo.addMessage(gameId, u, t)
-  } yield Event.WatcherMessage(u, t) :: Nil
+    _ ← !troll ?? WatcherRoomRepo.addMessage(gameId, u, t)
+  } yield Event.WatcherMessage(u, t, troll) :: Nil
 
   def systemMessages(game: Game, messages: List[SelectI18nKey]): Fu[List[Event]] =
     game.hasChat ?? {
       (messages map { m ⇒ trans(m) }) |> { messageKeys ⇒
         RoomRepo.addSystemMessages(game.id, messageKeys) inject {
-          messageKeys map { Event.Message("system", _) }
+          messageKeys map { Event.Message("system", _, false) }
         }
       }
     }
@@ -74,7 +75,7 @@ final class Messenger(
     game.hasChat ?? {
       trans(message) |> { messageKey ⇒
         RoomRepo.addSystemMessage(game.id, messageKey) inject {
-          Event.Message("system", messageKey) :: Nil
+          Event.Message("system", messageKey, false) :: Nil
         }
       }
     }
@@ -85,7 +86,7 @@ final class Messenger(
       status.fold("en", "dis") + "abled"
     ) |> { message ⇒
         RoomRepo.addSystemMessage(ref.gameId, message) inject {
-          Event.Message("system", message) :: Nil
+          Event.Message("system", message, false) :: Nil
         }
       }
 
diff --git a/modules/round/src/main/SocketHandler.scala b/modules/round/src/main/SocketHandler.scala
index 68f0d41d05..8b81ad2d8a 100644
--- a/modules/round/src/main/SocketHandler.scala
+++ b/modules/round/src/main/SocketHandler.scala
@@ -42,14 +42,15 @@ private[round] final class SocketHandler(
       } messenger.watcherMessage(
         ref.gameId,
         member.userId,
-        txt) pipeTo socket
+        txt,
+        member.troll) pipeTo socket
     }) { playerId ⇒
       {
         case ("p", o) ⇒ o int "v" foreach { v ⇒ socket ! PingVersion(uid, v) }
         case ("talk", o) ⇒ for {
           txt ← o str "d"
           if flood.allowMessage(uid, txt)
-        } messenger.playerMessage(ref, txt) pipeTo socket
+        } messenger.playerMessage(ref, txt, member.troll) pipeTo socket
         case ("rematch-yes", _)  ⇒ round(RematchYes(playerId))
         case ("rematch-no", _)   ⇒ round(RematchNo(playerId))
         case ("takeback-yes", _) ⇒ round(TakebackYes(playerId))
diff --git a/modules/round/src/main/VersionedEvent.scala b/modules/round/src/main/VersionedEvent.scala
index fc844963b6..f3901be9c3 100644
--- a/modules/round/src/main/VersionedEvent.scala
+++ b/modules/round/src/main/VersionedEvent.scala
@@ -12,7 +12,8 @@ case class VersionedEvent(
     data: JsValue,
     only: Option[Color],
     owner: Boolean,
-    watcher: Boolean) {
+    watcher: Boolean,
+    troll: Boolean) {
 
   def jsFor(m: Member): JsObject = visibleBy(m).fold(
     Json.obj(
@@ -26,5 +27,6 @@ case class VersionedEvent(
   private def visibleBy(m: Member): Boolean =
     if (watcher && m.owner) false
     else if (owner && m.watcher) false
+    else if (troll && !m.troll) false
     else only.fold(true)(_ == m.color)
 }