diff --git a/OpenRA.Game/Game.cs b/OpenRA.Game/Game.cs
index c68c711e2e..fae6837950 100644
--- a/OpenRA.Game/Game.cs
+++ b/OpenRA.Game/Game.cs
@@ -767,7 +767,7 @@ namespace OpenRA
 
 		public static bool IsCurrentWorld(World world)
 		{
-			return OrderManager != null && OrderManager.World == world;
+			return OrderManager != null && OrderManager.World == world && !world.Disposing;
 		}
 	}
 }
diff --git a/OpenRA.Mods.Common/Traits/Player/ConquestVictoryConditions.cs b/OpenRA.Mods.Common/Traits/Player/ConquestVictoryConditions.cs
index db7955b785..92a0251fe2 100644
--- a/OpenRA.Mods.Common/Traits/Player/ConquestVictoryConditions.cs
+++ b/OpenRA.Mods.Common/Traits/Player/ConquestVictoryConditions.cs
@@ -62,22 +62,22 @@ namespace OpenRA.Mods.Common.Traits
 			foreach (var a in player.World.Actors.Where(a => a.Owner == player))
 				a.Kill(a);
 
-			if (player == player.World.LocalPlayer)
+			Game.RunAfterDelay(info.NotificationDelay, () =>
 			{
-				Game.RunAfterDelay(info.NotificationDelay, () =>
-				{
-					if (Game.IsCurrentWorld(player.World))
-						Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Lose", player.Faction.InternalName);
-				});
-			}
+				if (Game.IsCurrentWorld(player.World) && player == player.World.LocalPlayer)
+					Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Lose", player.Faction.InternalName);
+			});
 		}
 
 		public void OnPlayerWon(Player player)
 		{
 			Game.Debug("{0} is victorious.", player.PlayerName);
 
-			if (player == player.World.LocalPlayer)
-				Game.RunAfterDelay(info.NotificationDelay, () => Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Win", player.Faction.InternalName));
+			Game.RunAfterDelay(info.NotificationDelay, () =>
+			{
+				if (Game.IsCurrentWorld(player.World) && player == player.World.LocalPlayer)
+					Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Win", player.Faction.InternalName);
+			});
 		}
 
 		public void OnObjectiveAdded(Player player, int id) { }
diff --git a/OpenRA.Mods.Common/Traits/Player/MissionObjectives.cs b/OpenRA.Mods.Common/Traits/Player/MissionObjectives.cs
index 1e13cd0eff..8f3a5514b4 100644
--- a/OpenRA.Mods.Common/Traits/Player/MissionObjectives.cs
+++ b/OpenRA.Mods.Common/Traits/Player/MissionObjectives.cs
@@ -150,6 +150,9 @@ namespace OpenRA.Mods.Common.Traits
 			if (gameOver)
 				Game.RunAfterDelay(Info.GameOverDelay, () =>
 				{
+					if (!Game.IsCurrentWorld(player.World))
+						return;
+
 					player.World.EndGame();
 					player.World.SetPauseState(true);
 					player.World.PauseStateLocked = true;
diff --git a/OpenRA.Mods.Common/Traits/Player/StrategicVictoryConditions.cs b/OpenRA.Mods.Common/Traits/Player/StrategicVictoryConditions.cs
index bc45753feb..ffd123d7f8 100644
--- a/OpenRA.Mods.Common/Traits/Player/StrategicVictoryConditions.cs
+++ b/OpenRA.Mods.Common/Traits/Player/StrategicVictoryConditions.cs
@@ -107,22 +107,22 @@ namespace OpenRA.Mods.Common.Traits
 			foreach (var a in player.World.Actors.Where(a => a.Owner == player))
 				a.Kill(a);
 
-			if (player == player.World.LocalPlayer)
+			Game.RunAfterDelay(info.NotificationDelay, () =>
 			{
-				Game.RunAfterDelay(info.NotificationDelay, () =>
-				{
-					if (Game.IsCurrentWorld(player.World))
-						Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Lose", player.Faction.InternalName);
-				});
-			}
+				if (Game.IsCurrentWorld(player.World) && player == player.World.LocalPlayer)
+					Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Lose", player.Faction.InternalName);
+			});
 		}
 
 		public void OnPlayerWon(Player player)
 		{
 			Game.Debug("{0} is victorious.", player.PlayerName);
 
-			if (player == player.World.LocalPlayer)
-				Game.RunAfterDelay(info.NotificationDelay, () => Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Win", player.Faction.InternalName));
+			Game.RunAfterDelay(info.NotificationDelay, () =>
+			{
+				if (Game.IsCurrentWorld(player.World) && player == player.World.LocalPlayer)
+					Game.Sound.PlayNotification(player.World.Map.Rules, player, "Speech", "Win", player.Faction.InternalName);
+			});
 		}
 
 		public void OnObjectiveAdded(Player player, int id) { }
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameMenuLogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameMenuLogic.cs
index f749f3d68a..81ff05725b 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameMenuLogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Ingame/IngameMenuLogic.cs
@@ -51,12 +51,19 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				var exitDelay = iop != null ? iop.ExitDelay : 0;
 				if (mpe != null)
 				{
-					Game.RunAfterDelay(exitDelay, () => mpe.Fade(MenuPaletteEffect.EffectType.Black));
+					Game.RunAfterDelay(exitDelay, () =>
+					{
+						if (Game.IsCurrentWorld(world))
+							mpe.Fade(MenuPaletteEffect.EffectType.Black);
+					});
 					exitDelay += 40 * mpe.Info.FadeLength;
 				}
 
 				Game.RunAfterDelay(exitDelay, () =>
 				{
+					if (!Game.IsCurrentWorld(world))
+						return;
+
 					Game.Disconnect();
 					Ui.ResetAll();
 					Game.LoadShellMap();
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Ingame/LoadIngamePlayerOrObserverUILogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Ingame/LoadIngamePlayerOrObserverUILogic.cs
index f9feaad3e5..976570dd8e 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Ingame/LoadIngamePlayerOrObserverUILogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Ingame/LoadIngamePlayerOrObserverUILogic.cs
@@ -42,6 +42,9 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 						loadingObserverWidgets = true;
 						Game.RunAfterDelay(objectives != null ? objectives.GameOverDelay : 0, () =>
 						{
+							if (!Game.IsCurrentWorld(world))
+								return;
+
 							playerRoot.RemoveChildren();
 							Game.LoadWidget(world, "OBSERVER_WIDGETS", playerRoot, new WidgetArgs());
 						});
diff --git a/OpenRA.Mods.D2k/Activities/SwallowActor.cs b/OpenRA.Mods.D2k/Activities/SwallowActor.cs
index 5d7d94de81..e99b5903f0 100644
--- a/OpenRA.Mods.D2k/Activities/SwallowActor.cs
+++ b/OpenRA.Mods.D2k/Activities/SwallowActor.cs
@@ -109,8 +109,9 @@ namespace OpenRA.Mods.D2k.Activities
 
 			Game.RunAfterDelay(1000, () =>
 			{
-				foreach (var affectedPlayer in affectedPlayers)
-					NotifyPlayer(affectedPlayer, attackPosition);
+				if (Game.IsCurrentWorld(self.World))
+					foreach (var affectedPlayer in affectedPlayers)
+						NotifyPlayer(affectedPlayer, attackPosition);
 			});
 		}