diff --git a/OpenRA.FileFormats/Map/TileSet.cs b/OpenRA.FileFormats/Map/TileSet.cs
index 2b7d8810a8..7c33da85f7 100644
--- a/OpenRA.FileFormats/Map/TileSet.cs
+++ b/OpenRA.FileFormats/Map/TileSet.cs
@@ -88,16 +88,12 @@ namespace OpenRA.FileFormats
 		public byte[] GetBytes(TileReference<ushort,byte> r)
 		{
 			Terrain tile;
-			Log.Write("Attempting to load tile {0} {1}",r.type,r.image);
 			try {
 				if( tiles.TryGetValue( r.type, out tile ) )
 					return tile.TileBitmapBytes[ r.image ];
 			}
-			catch (System.ArgumentOutOfRangeException)
-			{
-				tiles.TryGetValue( 0xfffe, out tile );
-				return tile.TileBitmapBytes[ 0 ];
-			}
+			catch (System.ArgumentOutOfRangeException) {	}
+			
 			byte[] missingTile = new byte[ 24 * 24 ];
 			for( int i = 0 ; i < missingTile.Length ; i++ )
 				missingTile[ i ] = 0x36;
diff --git a/OpenRA.Game/Graphics/Minimap.cs b/OpenRA.Game/Graphics/Minimap.cs
index d45a570c51..452ffbe9c1 100644
--- a/OpenRA.Game/Graphics/Minimap.cs
+++ b/OpenRA.Game/Graphics/Minimap.cs
@@ -89,8 +89,8 @@ namespace OpenRA.Graphics
 		public static Bitmap RenderTerrainBitmap(Map map, TileSet tileset)
 		{
 			var terrain = new Bitmap(map.MapSize.X, map.MapSize.Y);
-			for (var y = 0; y < map.MapSize.Y; y++)
-				for (var x = 0; x < map.MapSize.X; x++)
+			for (var x = 0; x < map.MapSize.X; x++)
+				for (var y = 0; y < map.MapSize.Y; y++)
 					terrain.SetPixel(x, y, map.IsInMap(x, y)
 						? Color.FromArgb(alpha, terrainTypeColors[map.Theater].ColorForTerrainType(tileset.GetTerrainType(map.MapTiles[x, y])))
 						: shroudColor);
@@ -117,8 +117,8 @@ namespace OpenRA.Graphics
 				var res = world.WorldActor.traits.Get<ResourceLayer>();
 				
 				oreLayer = new Bitmap(terrain);
-				for (var y = world.Map.TopLeft.Y; y < world.Map.BottomRight.Y; y++)
-					for (var x = world.Map.TopLeft.X; x < world.Map.BottomRight.X; x++)
+				for (var x = world.Map.TopLeft.X; x < world.Map.BottomRight.X; x++)
+					for (var y = world.Map.TopLeft.Y; y < world.Map.BottomRight.Y; y++)
 						if (res.GetResource(new int2(x,y)) != null)
 							oreLayer.SetPixel(x, y, Color.FromArgb(alpha, terrainTypeColors[world.Map.Theater].ColorForTerrainType(TerrainType.Ore)));
 			}
@@ -140,8 +140,8 @@ namespace OpenRA.Graphics
 					*(c + (a.Actor.Location.Y * bitmapData.Stride >> 2) + a.Actor.Location.X) =
 						Color.FromArgb(alpha, a.Actor.Owner.Color).ToArgb();
 
-				for (var y = world.Map.BottomRight.Y; y < world.Map.YOffset + world.Map.BottomRight.Y; y++)
-					for (var x = world.Map.TopLeft.X; x < world.Map.BottomRight.X; x++)
+				for (var x = world.Map.TopLeft.X; x < world.Map.BottomRight.X; x++)
+					for (var y = world.Map.TopLeft.Y; y < world.Map.BottomRight.Y; y++)
 					{
 						if (!world.LocalPlayer.Shroud.DisplayOnRadar(x, y))
 						{
diff --git a/OpenRA.Game/Graphics/TerrainRenderer.cs b/OpenRA.Game/Graphics/TerrainRenderer.cs
index 6b86a8546a..b0c5932d54 100644
--- a/OpenRA.Game/Graphics/TerrainRenderer.cs
+++ b/OpenRA.Game/Graphics/TerrainRenderer.cs
@@ -50,11 +50,10 @@ namespace OpenRA.Graphics
 
 			int nv = 0;
 			int ni = 0;
-			for( int i = map.TopLeft.X ; i < map.BottomRight.X; i++ )
-				for( int j = map.TopLeft.Y ; j < map.BottomRight.Y; j++ )
+			for( int j = map.TopLeft.Y ; j < map.BottomRight.Y; j++ )
+				for( int i = map.TopLeft.X ; i < map.BottomRight.X; i++ )
 				{
-				Log.Write("{0} {1}",i,j);	
-				Sprite tile = tileMapping[map.MapTiles[i, j]];
+					Sprite tile = tileMapping[map.MapTiles[i, j]];
 					// TODO: The zero below should explicitly refer to the terrain palette, but this code is called
 					// before the palettes are created
 					Util.FastCreateQuad(vertices, indices, Game.CellSize * new float2(i, j), tile, 0, nv, ni, tile.size);
diff --git a/OpenRA.Game/Traits/World/ResourceLayer.cs b/OpenRA.Game/Traits/World/ResourceLayer.cs
index c6c890617e..2530663962 100644
--- a/OpenRA.Game/Traits/World/ResourceLayer.cs
+++ b/OpenRA.Game/Traits/World/ResourceLayer.cs
@@ -28,17 +28,9 @@ namespace OpenRA.Traits
 	{
 		public object Create(Actor self) { return new ResourceLayer(self); }
 	}
-
-	public class ResourceLayer// : IRenderOverlay, ILoadWorldHook
-	{
-		public ResourceLayer(Actor self) {}
-		public void Destroy(int2 p){}
-		public ResourceTypeInfo GetResource(int2 p) {return null;}
-		public ResourceTypeInfo Harvest(int2 p) {return null;}
-		public void AddResource(ResourceTypeInfo info, int i, int j, int n) {}
-		public void Grow(ResourceTypeInfo info) {}
-		public void Spread(ResourceTypeInfo info) {}
-		/*
+
+	public class ResourceLayer: IRenderOverlay, ILoadWorldHook
+	{		
 		SpriteRenderer sr;
 		World w;
 
@@ -73,7 +65,7 @@ namespace OpenRA.Traits
 		public void WorldLoaded(World w)
 		{
 			this.w = w;
-			content = new CellContents[w.Map.MapSize, w.Map.MapSize];
+			content = new CellContents[w.Map.MapSize.X, w.Map.MapSize.Y];
 
 			resourceTypes = w.WorldActor.Info.Traits.WithInterface<ResourceTypeInfo>().ToArray();
 			foreach (var rt in resourceTypes)
@@ -81,11 +73,11 @@ namespace OpenRA.Traits
 
 			var map = w.Map;
 
-			for (int y = map.YOffset; y < map.YOffset + map.Height; y++)
-				for (int x = map.XOffset; x < map.XOffset + map.Width; x++)
+			for (int x = map.XOffset; x < map.XOffset + map.Width; x++)
+				for (int y = map.YOffset; y < map.YOffset + map.Height; y++)
 				{
 					content[x,y].type = resourceTypes.FirstOrDefault(
-						r => r.Overlays.Contains(w.Map.MapTiles[x, y].overlay));
+						r => r.ResourceType == w.Map.MapResources[x,y].type);
 					if (content[x, y].type != null)
 						content[x, y].image = ChooseContent(content[x, y].type);
 				}
@@ -157,17 +149,14 @@ namespace OpenRA.Traits
 		public void Grow(ResourceTypeInfo info)
 		{
 			var map = w.Map;
-			var mini = map.XOffset; var maxi = map.XOffset + map.Width;
-			var minj = map.YOffset; var maxj = map.YOffset + map.Height;
-
-			var newDensity = new byte[map.MapSize, map.MapSize];
-			for (int j = minj; j < maxj; j++)
-				for (int i = mini; i < maxi; i++)
+			var newDensity = new byte[map.MapSize.X, map.MapSize.Y];
+			for (int i = map.TopLeft.X; i < map.BottomRight.X; i++)
+				for (int j = map.TopLeft.Y; j < map.BottomRight.Y; j++)
 					if (content[i, j].type == info)
 						newDensity[i, j] = (byte)GetIdealDensity(i, j);
 
-			for (int j = minj; j < maxj; j++)
-				for (int i = mini; i < maxi; i++)
+			for (int i = map.TopLeft.X; i < map.BottomRight.X; i++)
+				for (int j = map.TopLeft.Y; j < map.BottomRight.Y; j++)
 					if (content[i, j].type == info && content[i, j].density < newDensity[i, j])
 						++content[i, j].density;
 		}
@@ -179,16 +168,16 @@ namespace OpenRA.Traits
 			var mini = map.XOffset; var maxi = map.XOffset + map.Width;
 			var minj = map.YOffset; var maxj = map.YOffset + map.Height;
 
-			var growMask = new bool[map.MapSize, map.MapSize];
-			for (int j = minj; j < maxj; j++)
-				for (int i = mini; i < maxi; i++)
+			var growMask = new bool[map.MapSize.X, map.MapSize.Y];
+			for (int i = map.TopLeft.X; i < map.BottomRight.X; i++)
+				for (int j = map.TopLeft.Y; j < map.BottomRight.Y; j++)
 					if (content[i,j].type == null
 						&& GetAdjacentCellsWith(info, i,j ) > 0
 						&& w.IsCellBuildable(new int2(i, j), false))
 						growMask[i, j] = true;
 
-			for (int j = minj; j < maxj; j++)
-				for (int i = mini; i < maxi; i++)
+			for (int i = map.TopLeft.X; i < map.BottomRight.X; i++)
+				for (int j = map.TopLeft.Y; j < map.BottomRight.Y; j++)
 					if (growMask[i, j])
 					{
 						content[i, j].type = info;
@@ -206,6 +195,5 @@ namespace OpenRA.Traits
 			public Sprite[] image;
 			public int density;
 		}
-		*/
 	}
 }
diff --git a/OpenRA.Game/Traits/World/ResourceType.cs b/OpenRA.Game/Traits/World/ResourceType.cs
index d2cec0017a..ae97171614 100644
--- a/OpenRA.Game/Traits/World/ResourceType.cs
+++ b/OpenRA.Game/Traits/World/ResourceType.cs
@@ -24,9 +24,9 @@ namespace OpenRA.Traits
 {
 	public class ResourceTypeInfo : ITraitInfo
 	{
-		public readonly string[] Overlays = { };
 		public readonly string[] SpriteNames = { };
 		public readonly string Palette = "terrain";
+		public readonly int ResourceType = 1;
 
 		public readonly int ValuePerUnit = 0;
 		public readonly string Name = null;
diff --git a/mods/cnc/system.yaml b/mods/cnc/system.yaml
index 416be02de6..9dc036983e 100644
--- a/mods/cnc/system.yaml
+++ b/mods/cnc/system.yaml
@@ -209,7 +209,7 @@ World:
 		OverlayTypes: barb
 	ResourceLayer:
 	ResourceType@green-tib:
-		Overlays: ti1,ti2,ti3,ti4,ti5,ti6,ti7,ti8,ti9,ti10,ti11,ti12
+		ResourceType: 1
 		Palette: terrain
 		SpriteNames: ti1,ti2,ti3,ti4,ti5,ti6,ti7,ti8,ti9,ti10,ti11,ti12
 		ValuePerUnit: 30
diff --git a/mods/ra/system.yaml b/mods/ra/system.yaml
index 503d487a38..672d879acf 100644
--- a/mods/ra/system.yaml
+++ b/mods/ra/system.yaml
@@ -232,7 +232,7 @@ World:
 		OverlayTypes: barb
 	ResourceLayer:
 	ResourceType@ore:
-		Overlays: gold01,gold02,gold03,gold04
+		ResourceType: 1
 		Palette: terrain
 		SpriteNames: gold01,gold02,gold03,gold04
 		ValuePerUnit: 25
@@ -240,7 +240,7 @@ World:
 		GrowthInterval: 1.2
 		SpreadInterval: 2.0
 	ResourceType@gem:
-		Overlays: gem01,gem02,gem03,gem04
+		ResourceType: 1
 		Palette: terrain
 		SpriteNames: gem01,gem02,gem03,gem04
 		ValuePerUnit: 50