diff --git a/OpenRa.Game/Controller.cs b/OpenRa.Game/Controller.cs
index 7a3a8b31f4..d47b69949a 100644
--- a/OpenRa.Game/Controller.cs
+++ b/OpenRa.Game/Controller.cs
@@ -17,12 +17,16 @@ namespace OpenRa.Game
 			this.game = game;
 		}
 
-		public void WorldClicked(object sender, MouseEventArgs e)
+		public void WorldClicked( object sender, MouseEventArgs e )
 		{
-			var xy = (1 / 24.0f) * (new float2(e.Location) + game.viewport.Location);
-			if (orderGenerator != null)
-				orderGenerator.Order(game, new int2((int)xy.X, (int)xy.Y)).Apply(game);
 			// todo: route all orders through netcode
+			var xy = ( 1 / 24.0f ) * ( new float2( e.Location ) + game.viewport.Location );
+			if( orderGenerator != null )
+			{
+				var order = orderGenerator.Order( game, new int2( (int)xy.X, (int)xy.Y ) );
+				if( order != null )
+					order.Apply( game );
+			}
 		}
 	}
 }
diff --git a/OpenRa.Game/Graphics/Sequence.cs b/OpenRa.Game/Graphics/Sequence.cs
index c9fe749d10..ecce1b57b5 100644
--- a/OpenRa.Game/Graphics/Sequence.cs
+++ b/OpenRa.Game/Graphics/Sequence.cs
@@ -32,7 +32,7 @@ namespace OpenRa.Game.Graphics
 
 		public Sprite GetSprite(int frame)
 		{
-			return UnitSheetBuilder.sprites[frame + start];
+			return UnitSheetBuilder.sprites[ ( frame % length ) + start ];
 		}
 	}
 }
diff --git a/sequences.xml b/sequences.xml
index 7fd1819920..d424f04aa7 100644
--- a/sequences.xml
+++ b/sequences.xml
@@ -13,7 +13,7 @@
 		
 		also, <sequence length="*"> creates a sequence that includes all frames
 		after `start`.
-		
+		 
 		one day, we might support inheritance here too.
 		
 		standard sequence names:
@@ -104,6 +104,14 @@
 		<sequence name="make" start="0" length="*" src="weapmake" />
 	</unit>
 
+	<!-- allied gun turret -->
+
+	<unit name="gun">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="damaged-idle" start="1" length="32"/>
+		<sequence name="make" start="0" length="*" src="gunmake" />
+	</unit>
+
 	<!-- mcv -->
 	
 	<unit name="mcv">
@@ -128,8 +136,23 @@
 		<sequence name="harvest5" start="72" length="8"/>
 		<sequence name="harvest6" start="80" length="8"/>
 		<sequence name="harvest7" start="88" length="8"/>
+		<sequence name="empty" start="96" length="15"/>
 	</unit>
 	
+	<!-- light tank -->
+	
+	<unit name="1tnk">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="turret" start="32" length="32"/>
+	</unit>
+
+	<!-- medium tank -->
+	
+	<unit name="2tnk">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="turret" start="32" length="32"/>
+	</unit>
+
 	<!-- heavy tank -->
 	
 	<unit name="3tnk">
@@ -137,6 +160,27 @@
 		<sequence name="turret" start="32" length="32"/>
 	</unit>
 
+	<!-- mammoth tank -->
+	
+	<unit name="4tnk">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="turret" start="32" length="32"/>
+	</unit>
+
+	<!-- v2 rocket launcher -->
+	
+	<unit name="v2rl">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="reloading" start="32" length="32"/>
+		<sequence name="aiming" start="64" length="16"/>
+	</unit>
+
+	<!-- artillery -->
+	
+	<unit name="arty">
+		<sequence name="idle" start="0" length="32"/>
+	</unit>
+
 	<!-- jeep -->
 	
 	<unit name="jeep">
@@ -144,6 +188,33 @@
 		<sequence name="turret" start="32" length="32"/>
 	</unit>
 
+	<!-- apc -->
+	
+	<unit name="apc">
+		<sequence name="idle" start="0" length="32"/>
+	</unit>
+
+	<!-- mine layer -->
+	
+	<unit name="mnly">
+		<sequence name="idle" start="0" length="32"/>
+		<!-- and 16 "lay mine" sprites, not used in real-ra -->
+	</unit>
+
+	<!-- radar jammer -->
+	
+	<unit name="mrj">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="turret" start="32" length="32"/>
+	</unit>
+
+	<!-- mobile gap generator -->
+	
+	<unit name="mgg">
+		<sequence name="idle" start="0" length="32"/>
+		<sequence name="turret" start="32" length="8"/>
+	</unit>
+
 	<!-- build clock - hacked in -->
 	
 	<unit name="clock">