diff --git a/src/main/java/org/ultramine/server/UltramineServerConfig.java b/src/main/java/org/ultramine/server/UltramineServerConfig.java
index e6de13c..065b902 100644
--- a/src/main/java/org/ultramine/server/UltramineServerConfig.java
+++ b/src/main/java/org/ultramine/server/UltramineServerConfig.java
@@ -1,60 +1,45 @@
-package org.ultramine.server;
-
-import java.util.LinkedHashMap;
-import java.util.Map;
-
-public class UltramineServerConfig
-{
-	public WatchdogThreadConfig	watchdogThread = new WatchdogThreadConfig();
-	public VanillaConfig		vanilla = new VanillaConfig();
-	public boolean 				enableChunkLoaders = true;
-	public int	 				chunkUpdateRadius = 7;
-
-	public static class WatchdogThreadConfig
-	{
-		public int timeout = 120;
-		public boolean restart = true;
-	}
-	
-	
-	
-	public static class VanillaConfig
-	{
-		public String	generatorSettings			= "";
-		public int		opPermissionLevel			= 4;
-		public boolean	allowNether					= true;
-		public String	levelName					= "world";
-		public boolean	enableQuery					= false;
-		public int		queryPort					= 25565;
-		public boolean	allowFlight					= false;
-		public boolean	announcePlayerAchievements	= true;
-		public int		serverPort					= 25565;
-		public String	levelType					= "DEFAULT";
-		public boolean	enableRcon					= false;
-		public int		rconPort					= 0;
-		public String	rconPassword				= "";
-		public boolean	forceGamemode				= false;
-		public String	levelSeed					= "";
-		public String	serverIp					= "";
-		public int		maxBuildHeight				= 256;
-		public boolean	spawnNPCs					= true;
-		public boolean	whiteList					= false;
-		public boolean	spawnAnimals				= true;
-		public boolean	snooperEnabled				= true;
-		public boolean	hardcore					= false;
-		public boolean	onlineMode					= true;
-		public String	resourcePack				= "";
-		public boolean	pvp							= true;
-		public int		difficulty					= 1;
-		public boolean	enableCommandBlock			= false;
-		public int		playerIdleTimeout			= 0;
-		public int		gamemode					= 0;
-		public int		maxPlayers					= 20;
-		public boolean	spawnMonsters				= true;
-		public int		viewDistance				= 10;
-		public boolean	generateStructures			= true;
-		public String	motd						= "A Minecraft Server";
-
-		public Map<String, Object> 	unresolved = new LinkedHashMap<String, Object>();
-	}
-}
+package org.ultramine.server;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public class UltramineServerConfig
+{
+	public WatchdogThreadConfig	watchdogThread = new WatchdogThreadConfig();
+	public VanillaConfig		vanilla = new VanillaConfig();
+
+	public static class WatchdogThreadConfig
+	{
+		public int timeout = 120;
+		public boolean restart = true;
+	}
+	
+	
+	
+	public static class VanillaConfig
+	{
+		public int		opPermissionLevel			= 4;
+		public boolean	enableQuery					= false;
+		public int		queryPort					= 25565;
+		public boolean	allowFlight					= false;
+		public boolean	announcePlayerAchievements	= true;
+		public int		serverPort					= 25565;
+		public boolean	enableRcon					= false;
+		public int		rconPort					= 0;
+		public String	rconPassword				= "";
+		public boolean	forceGamemode				= false;
+		public String	serverIp					= "";
+		public boolean	whiteList					= false;
+		public boolean	snooperEnabled				= true;
+		public boolean	hardcore					= false;
+		public boolean	onlineMode					= true;
+		public String	resourcePack				= "";
+		public boolean	enableCommandBlock			= false;
+		public int		playerIdleTimeout			= 0;
+		public int		gamemode					= 0;
+		public int		maxPlayers					= 20;
+		public String	motd						= "A Minecraft Server";
+
+		public Map<String, Object> 	unresolved = new LinkedHashMap<String, Object>();
+	}
+}
diff --git a/src/main/java/org/ultramine/server/WorldsConfig.java b/src/main/java/org/ultramine/server/WorldsConfig.java
new file mode 100644
index 0000000..0ab10f1
--- /dev/null
+++ b/src/main/java/org/ultramine/server/WorldsConfig.java
@@ -0,0 +1,49 @@
+package org.ultramine.server;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class WorldsConfig
+{
+	public WorldConfig global = new WorldConfig();
+	public Map<String, WorldConfig> worlds = new HashMap<String, WorldConfig>();
+	
+	public static class WorldConfig
+	{
+		public int dimension;
+		public Generation generation;
+		public MobSpawn mobSpawn;
+		public Settings settings;
+		public ChunkLoading chunkLoading;
+		
+		public static class Generation
+		{
+			public String seed;
+			public int providerID = 0;
+			public String levelType = "DEFAULT";
+			public String generatorSettings = "";
+			public boolean generateStructures = true;
+		}
+		
+		public static class MobSpawn
+		{
+			public boolean spawnAnimals = true;
+			public boolean spawnMonsters = true;
+			public boolean spawnNPCs = true;
+		}
+		
+		public static class Settings
+		{
+			public int difficulty = 1;
+			public boolean pvp = true;
+			public int maxBuildHeight = 256;
+		}
+		
+		public static class ChunkLoading
+		{
+			public int viewDistance  = 10;
+			public int chunkUpdateRadius = 7;
+			public boolean enableChunkLoaders = true;
+		}
+	}
+}
diff --git a/src/main/resources/org/ultramine/defaults/defaultworlds.yml b/src/main/resources/org/ultramine/defaults/defaultworlds.yml
new file mode 100644
index 0000000..24abf3c
--- /dev/null
+++ b/src/main/resources/org/ultramine/defaults/defaultworlds.yml
@@ -0,0 +1,39 @@
+global: &global
+    dimension: 0
+    generation: &global_gen
+        generateStructures: true
+        generatorSettings: ''
+        levelType: DEFAULT
+        providerID: 0
+        seed: {seed}
+    mobSpawn:
+        spawnAnimals: true
+        spawnMonsters: true
+        spawnNPCs: true
+    settings:
+        difficulty: 1
+        maxBuildHeight: 256
+        pvp: true
+    chunkLoading:
+        viewDistance: 10
+        chunkUpdateRadius: 7
+        enableChunkLoaders: true
+worlds:
+    world:
+        <<: *global
+        dimension: 0
+        generation:
+            <<: *global_gen
+            providerID: 0
+    world_nether:
+        <<: *global
+        dimension: -1
+        generation:
+            <<: *global_gen
+            providerID: -1
+    world_the_end:
+        <<: *global
+        dimension: 1
+        generation:
+            <<: *global_gen
+            providerID: 1