diff --git a/core/src/io/anuke/mindustry/UI.java b/core/src/io/anuke/mindustry/UI.java
index b2146f64e8..b714ef867c 100644
--- a/core/src/io/anuke/mindustry/UI.java
+++ b/core/src/io/anuke/mindustry/UI.java
@@ -23,6 +23,8 @@ import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.Blocks;
 import io.anuke.mindustry.world.blocks.types.Configurable;
 import io.anuke.ucore.core.*;
+import io.anuke.ucore.entities.Entities;
+import io.anuke.ucore.function.StringSupplier;
 import io.anuke.ucore.function.VisibilityProvider;
 import io.anuke.ucore.modules.SceneModule;
 import io.anuke.ucore.scene.Element;
@@ -499,7 +501,9 @@ public class UI extends SceneModule{
 			new table(){{
 				abottom();
 				aleft();
-				new label("[red]DEBUG MODE").scale(0.5f);
+				new label((StringSupplier)()->"[purple]entities: " + Entities.amount()).left();
+				row();
+				new label("[red]DEBUG MODE").scale(0.5f).left();
 			}}.end();
 		}
 		
diff --git a/core/src/io/anuke/mindustry/entities/BulletType.java b/core/src/io/anuke/mindustry/entities/BulletType.java
index 19d9d73fdf..878aa49811 100644
--- a/core/src/io/anuke/mindustry/entities/BulletType.java
+++ b/core/src/io/anuke/mindustry/entities/BulletType.java
@@ -79,6 +79,7 @@ public abstract class BulletType  extends BaseBulletType<Bullet>{
 			Effects.shake(3f, 3f, b);
 		}
 	},
+	//TODO use DamageArea instead
 	shell = new BulletType(1.1f, 85){
 		{
 			lifetime = 110f;
diff --git a/core/src/io/anuke/mindustry/entities/TileEntity.java b/core/src/io/anuke/mindustry/entities/TileEntity.java
index d0d74b35ac..f1d82d653b 100644
--- a/core/src/io/anuke/mindustry/entities/TileEntity.java
+++ b/core/src/io/anuke/mindustry/entities/TileEntity.java
@@ -13,6 +13,7 @@ import io.anuke.mindustry.world.Block;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.Blocks;
 import io.anuke.mindustry.world.blocks.ProductionBlocks;
+import io.anuke.mindustry.world.blocks.types.Wall;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Timers;
 import io.anuke.ucore.entities.Entity;
@@ -23,15 +24,22 @@ public class TileEntity extends Entity{
 	public ObjectMap<Item, Integer> items = new ObjectMap<>();
 	public int maxhealth, health;
 	public boolean dead = false;
+	public boolean added;
 	
-	public TileEntity init(Tile tile){
+	/**Sets this tile entity data to this tile, and adds it if necessary.*/
+	public TileEntity init(Tile tile, boolean added){
 		this.tile = tile;
+		this.added = added;
 		x = tile.worldx();
 		y = tile.worldy();
 		
 		maxhealth = tile.block().health;
 		health = maxhealth;
 		
+		if(added){
+			add();
+		}
+		
 		return this;
 	}
 	
@@ -78,7 +86,7 @@ public class TileEntity extends Entity{
 	
 	@Override
 	public void update(){
-		if(health != 0 && !tile.block().name().contains("block") &&
+		if(health != 0 && !(tile.block() instanceof Wall) &&
 				Mathf.chance(0.009f*Timers.delta()*(1f-(float)health/maxhealth))){
 			
 			Effects.effect("smoke", x+Mathf.range(4), y+Mathf.range(4));
diff --git a/core/src/io/anuke/mindustry/entities/effect/DamageArea.java b/core/src/io/anuke/mindustry/entities/effect/DamageArea.java
new file mode 100644
index 0000000000..ffd229c4bb
--- /dev/null
+++ b/core/src/io/anuke/mindustry/entities/effect/DamageArea.java
@@ -0,0 +1,8 @@
+package io.anuke.mindustry.entities.effect;
+
+import io.anuke.ucore.entities.Entity;
+
+//TODO
+public class DamageArea extends Entity{
+
+}
diff --git a/core/src/io/anuke/mindustry/entities/effect/EMP.java b/core/src/io/anuke/mindustry/entities/effect/EMP.java
index 0be4a1fbb7..339222a2b1 100644
--- a/core/src/io/anuke/mindustry/entities/effect/EMP.java
+++ b/core/src/io/anuke/mindustry/entities/effect/EMP.java
@@ -38,7 +38,7 @@ public class EMP extends TimedEntity{
 				if(Vector2.dst(dx, dy, 0, 0) < radius){
 					Tile tile = World.tile(worldx + dx, worldy + dy);
 					
-					if(tile != null && tile.block().update/* && tile.block() instanceof PowerAcceptor*/){
+					if(tile != null && tile.block().destructible){
 						array.add(tile);
 					}
 				}
diff --git a/core/src/io/anuke/mindustry/world/Block.java b/core/src/io/anuke/mindustry/world/Block.java
index e6462f26b9..f68e834dd1 100644
--- a/core/src/io/anuke/mindustry/world/Block.java
+++ b/core/src/io/anuke/mindustry/world/Block.java
@@ -4,6 +4,8 @@ import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.utils.Array;
 
+import io.anuke.mindustry.GameState;
+import io.anuke.mindustry.GameState.State;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
 import io.anuke.mindustry.resource.Item;
@@ -12,28 +14,46 @@ import io.anuke.mindustry.resource.Liquid;
 import io.anuke.ucore.core.Draw;
 import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.util.Tmp;
-
 public class Block{
 	private static int lastid;
 	private static Array<Block> blocks = new Array<Block>();
 	protected static TextureRegion temp = new TextureRegion();
 	
+	/**internal name*/
 	public final String name;
-	public String formalName;
-	public String explosionEffect = "explosion";
-	public String explosionSound = "break";
-	public boolean solid, update, rotate, breakable;
-	public int health = 40;
-	public String shadow = "shadow";
-	public float breaktime = 30;
+	/**internal ID*/
 	public final int id;
-	//edge fallback, used for ores
+	/**display name*/
+	public String formalName;
+	/**played on destroy*/
+	public String explosionEffect = "explosion";
+	/**played on destroy*/
+	public String explosionSound = "break";
+	/**whether this block has a tile entity that updates*/
+	public boolean update;
+	/**whether this block has health and can be destroyed*/
+	public boolean destructible;
+	/**whether this is solid*/
+	public boolean solid;
+	/**whether this is rotateable*/
+	public boolean rotate;
+	/**whether you can break this with rightblick*/
+	public boolean breakable;
+	/**time it takes to break*/
+	public float breaktime = 30;
+	/**tile entity health*/
+	public int health = 40;
+	/**the shadow drawn under the block*/
+	public String shadow = "shadow";
+	/**edge fallback, used mainly for ores*/
 	public String edge = "stone";
-	//whether to have 3 variants
+	/**whether this block has 3 variants*/
 	public boolean vary = true;
-	//stuff that drops when broken
+	/**stuff that drops when broken*/
 	public ItemStack drops = null;
+	/**liquids that drop from this block, used for pumps*/
 	public Liquid liquidDrop = null;
+	/**multiblock width/height*/
 	public int width = 1, height = 1;
 
 	public Block(String name) {
@@ -181,6 +201,12 @@ public class Block{
 			Vector2 offset = getPlaceOffset();
 			Draw.rect(name(), tile.worldx() + offset.x, tile.worldy() + offset.y);
 		}
+		
+		//update the tile entity through the draw method, only if it's an entity without updating
+		//TODO enable
+		if(destructible && !update && !GameState.is(State.paused)){
+		//	tile.entity.update();
+		}
 	}
 	
 	/**Offset for placing and drawing multiblocks.*/
diff --git a/core/src/io/anuke/mindustry/world/Generator.java b/core/src/io/anuke/mindustry/world/Generator.java
index 7ca292ab83..ffacd1996b 100644
--- a/core/src/io/anuke/mindustry/world/Generator.java
+++ b/core/src/io/anuke/mindustry/world/Generator.java
@@ -93,6 +93,11 @@ public class Generator{
 					floor = Blocks.stone;
 				}
 				
+				//preformance debugging
+				//if(Vector2.dst(pixmap.getWidth()/2, pixmap.getHeight()/2, x, y) < 40){
+				//	block = DefenseBlocks.stonewall;
+				//}
+				
 				World.tile(x, y).setBlock(block);
 				World.tile(x, y).setFloor(floor);
 				
diff --git a/core/src/io/anuke/mindustry/world/Tile.java b/core/src/io/anuke/mindustry/world/Tile.java
index 95294743a1..ed6352d53b 100644
--- a/core/src/io/anuke/mindustry/world/Tile.java
+++ b/core/src/io/anuke/mindustry/world/Tile.java
@@ -105,7 +105,7 @@ public class Tile{
 	}
 	
 	public boolean passable(){
-		return isLinked() || !(floor.solid || (block.solid && !block.update));
+		return isLinked() || !(floor.solid || (block.solid && (!block.destructible && !block.update)));
 	}
 	
 	public boolean solid(){
@@ -114,7 +114,7 @@ public class Tile{
 	
 	public boolean breakable(){
 		if(link == 0){
-			return (block.update || block.breakable);
+			return (block.destructible || block.breakable);
 		}else{
 			return getLinked().breakable();
 		}
@@ -163,13 +163,14 @@ public class Tile{
 	}
 	
 	public void changed(){
-		if(entity != null){
+		if(entity != null && entity.added){
 			entity.remove();
 			entity = null;
 		}
 		
-		if(block.update)
-			entity = block.getEntity().init(this).add();
+		if(block.destructible || block.update){
+			entity = block.getEntity().init(this, block.update);
+		}
 	}
 	
 	@Override
diff --git a/core/src/io/anuke/mindustry/world/blocks/Blocks.java b/core/src/io/anuke/mindustry/world/blocks/Blocks.java
index 2c7a985d44..db40495857 100644
--- a/core/src/io/anuke/mindustry/world/blocks/Blocks.java
+++ b/core/src/io/anuke/mindustry/world/blocks/Blocks.java
@@ -10,6 +10,7 @@ import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.types.BlockPart;
 import io.anuke.mindustry.world.blocks.types.Floor;
 import io.anuke.ucore.core.Effects;
+import io.anuke.ucore.core.Timers;
 import io.anuke.ucore.util.Mathf;
 
 public class Blocks{
@@ -49,11 +50,11 @@ public class Blocks{
 		
 		@Override
 		public void update(Tile tile){
-			if(Mathf.chance(0.001)){
+			if(Mathf.chance(0.001 * Timers.delta())){
 				Effects.effect("lava", tile.worldx() + Mathf.range(5f), tile.worldy() + Mathf.range(5f));
 			}
 			
-			if(Mathf.chance(0.003)){
+			if(Mathf.chance(0.003 * Timers.delta())){
 				Effects.effect("lavabubble", tile.worldx() + Mathf.range(3f), tile.worldy() + Mathf.range(3f));
 			}
 		}
@@ -68,7 +69,7 @@ public class Blocks{
 		
 		@Override
 		public void update(Tile tile){
-			if(Mathf.chance(0.0025)){
+			if(Mathf.chance(0.0025 * Timers.delta())){
 				Effects.effect("oilbubble", tile.worldx() + Mathf.range(2f), tile.worldy() + Mathf.range(2f));
 			}
 		}
diff --git a/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java b/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java
index e9d24e158e..a9249b2662 100644
--- a/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java
+++ b/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java
@@ -16,7 +16,7 @@ public class ProductionBlocks{
 		{
 			health = 600;
 			solid = true;
-			update = true;
+			destructible = true;
 			width = 3;
 			height = 3;
 		}
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/Wall.java b/core/src/io/anuke/mindustry/world/blocks/types/Wall.java
index d6eaf1ba0f..e2f2afefc7 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/Wall.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/Wall.java
@@ -7,7 +7,7 @@ public class Wall extends Block{
 	public Wall(String name) {
 		super(name);
 		solid = true;
-		update = true;
+		destructible = true;
 	}
 	
 	public boolean canReplace(Block other){
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldedWallBlock.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldedWallBlock.java
index f0c2dce39a..811cfb75be 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldedWallBlock.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldedWallBlock.java
@@ -17,6 +17,8 @@ public class ShieldedWallBlock extends PowerBlock{
 
 	public ShieldedWallBlock(String name) {
 		super(name);
+		destructible = true;
+		update = false;
 		voltage = 0.00001f;
 	}
 	
diff --git a/desktop/src/io/anuke/mindustry/desktop/DesktopLauncher.java b/desktop/src/io/anuke/mindustry/desktop/DesktopLauncher.java
index 9eadf7daa9..a66e2a34a1 100644
--- a/desktop/src/io/anuke/mindustry/desktop/DesktopLauncher.java
+++ b/desktop/src/io/anuke/mindustry/desktop/DesktopLauncher.java
@@ -17,7 +17,7 @@ public class DesktopLauncher {
 		Lwjgl3ApplicationConfiguration config = new Lwjgl3ApplicationConfiguration();
 		config.setTitle("Mindustry");
 		config.setMaximized(true);
-		//config.useVsync(false);
+		config.useVsync(false);
 		config.setWindowedMode(800, 600);
 		config.setWindowIcon("sprites/icon.png");
 		
diff --git a/html/src/io/anuke/mindustry/client/HtmlLauncher.java b/html/src/io/anuke/mindustry/client/HtmlLauncher.java
index 5bbc443c58..930e97b0da 100644
--- a/html/src/io/anuke/mindustry/client/HtmlLauncher.java
+++ b/html/src/io/anuke/mindustry/client/HtmlLauncher.java
@@ -5,12 +5,14 @@ import java.util.Date;
 import com.badlogic.gdx.ApplicationListener;
 import com.badlogic.gdx.backends.gwt.GwtApplication;
 import com.badlogic.gdx.backends.gwt.GwtApplicationConfiguration;
+import com.badlogic.gdx.backends.gwt.preloader.Preloader.PreloaderCallback;
+import com.badlogic.gdx.backends.gwt.preloader.Preloader.PreloaderState;
+import com.google.gwt.core.client.GWT;
 import com.google.gwt.dom.client.*;
+import com.google.gwt.dom.client.Style.Unit;
 import com.google.gwt.i18n.client.NumberFormat;
 import com.google.gwt.i18n.shared.DateTimeFormat;
-import com.google.gwt.user.client.ui.HasHorizontalAlignment;
-import com.google.gwt.user.client.ui.HasVerticalAlignment;
-import com.google.gwt.user.client.ui.VerticalPanel;
+import com.google.gwt.user.client.ui.*;
 
 import io.anuke.mindustry.Mindustry;
 import io.anuke.mindustry.io.Formatter;
@@ -19,6 +21,37 @@ public class HtmlLauncher extends GwtApplication {
     static final int WIDTH = 800;
     static final int HEIGHT = 600;
     static HtmlLauncher instance;
+    
+    @Override
+    public PreloaderCallback getPreloaderCallback () {
+		final Panel preloaderPanel = new VerticalPanel();
+		preloaderPanel.setStyleName("gdx-preloader");
+		final Image logo = new Image(GWT.getModuleBaseURL() + "logo.png");
+		logo.setStyleName("logo");		
+		preloaderPanel.add(logo);
+		final Panel meterPanel = new SimplePanel();
+		meterPanel.setStyleName("gdx-meter");
+		meterPanel.addStyleName("red");
+		final InlineHTML meter = new InlineHTML();
+		final Style meterStyle = meter.getElement().getStyle();
+		meterStyle.setWidth(0, Unit.PCT);
+		meterPanel.add(meter);
+		preloaderPanel.add(meterPanel);
+		getRootPanel().add(preloaderPanel);
+		return new PreloaderCallback() {
+
+			@Override
+			public void error (String file) {
+				System.out.println("error: " + file);
+			}
+			
+			@Override
+			public void update (PreloaderState state) {
+				meterStyle.setWidth(100f * state.getProgress(), Unit.PCT);
+			}			
+			
+		};
+	}
 
     @Override
     public GwtApplicationConfiguration getConfig() {
diff --git a/html/webapp/html/logo.png b/html/webapp/html/logo.png
new file mode 100644
index 0000000000..d8c6598408
Binary files /dev/null and b/html/webapp/html/logo.png differ