diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index ce08eaf..d28243b 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index 94a25f7..35eb1dd 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index d5a16bf..adb2947 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,9 +1,11 @@
 plugins {
     id 'java'
+    id "com.github.johnrengelman.shadow" version "7.1.0"
 }
 
-group = 'eu.mhsl.craftattack.worldmuseum'
-version = '1.0-SNAPSHOT'
+group = '' +
+        ''
+version = '1.0'
 
 repositories {
     mavenCentral()
@@ -11,11 +13,13 @@ repositories {
 }
 
 dependencies {
-    testImplementation platform('org.junit:junit-bom:5.9.1')
-    testImplementation 'org.junit.jupiter:junit-jupiter'
+
     implementation 'com.github.Minestom:Minestom:8ad2c7701f'
 }
 
-test {
-    useJUnitPlatform()
+jar {
+    manifest {
+        attributes 'Main-Class': 'eu.mhsl.craftattack.worldmuseum.Main',
+                "Multi-Release": true
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
deleted file mode 100644
index 7adcabb..0000000
--- a/src/main/java/Main.java
+++ /dev/null
@@ -1,13 +0,0 @@
-import net.minestom.server.MinecraftServer;
-
-public class Main {
-    public static void main(String[] args) {
-        // Initialize the server
-        MinecraftServer minecraftServer = MinecraftServer.init();
-
-        // REGISTER EVENTS (set spawn instance, teleport player at spawn)
-
-        // Start the server
-        minecraftServer.start("0.0.0.0", 25565);
-    }
-}
diff --git a/src/main/java/eu/mhsl/craftattack/worldmuseum/Main.java b/src/main/java/eu/mhsl/craftattack/worldmuseum/Main.java
new file mode 100755
index 0000000..464ca41
--- /dev/null
+++ b/src/main/java/eu/mhsl/craftattack/worldmuseum/Main.java
@@ -0,0 +1,70 @@
+package eu.mhsl.craftattack.worldmuseum;
+
+import eu.mhsl.craftattack.worldmuseum.listener.ClickListener;
+import eu.mhsl.craftattack.worldmuseum.worlds.WorldManager;
+import net.minestom.server.MinecraftServer;
+import net.minestom.server.coordinate.Pos;
+import net.minestom.server.entity.GameMode;
+import net.minestom.server.entity.Player;
+import net.minestom.server.event.GlobalEventHandler;
+import net.minestom.server.event.player.PlayerLoginEvent;
+import net.minestom.server.event.player.PlayerUseItemEvent;
+import net.minestom.server.instance.InstanceContainer;
+import net.minestom.server.instance.InstanceManager;
+import net.minestom.server.instance.block.Block;
+
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+    static int PORT = 25565;
+    static String IP = "0.0.0.0";
+    static List<InstanceContainer> worlds = new ArrayList<>();
+
+    public static void main(String[] args) {
+        // Initialization
+        System.setProperty("minestom.chunk-view-distance", "16");
+        MinecraftServer minecraftServer = MinecraftServer.init();
+        InstanceManager instanceManager = MinecraftServer.getInstanceManager();
+
+        //load eu.mhsl.craftattack.worldmuseum.worlds / configExample file
+        WorldManager.getInstance().loadWorlds();
+
+
+
+        // Create starting-instance / world
+        InstanceContainer instanceContainer = instanceManager.createInstanceContainer();
+        instanceContainer.setBlock(0,0,0,Block.STONE);
+
+
+        // Add an event callback to specify the spawning instance (and the spawn position)
+        GlobalEventHandler globalEventHandler = MinecraftServer.getGlobalEventHandler();
+        globalEventHandler.addListener(PlayerLoginEvent.class, event -> {
+            final Player player = event.getPlayer();
+            event.setSpawningInstance(instanceContainer);
+            player.setRespawnPoint(new Pos(0.5,2,0.5));
+            player.setGameMode(GameMode.CREATIVE);
+
+
+
+
+            for (int i = 0; i< WorldManager.getInstance().getWorlds().size(); i++) {
+                if (WorldManager.getInstance().getWorlds().get(i).isEnabled()) {
+                    player.getInventory().setItemStack(i, WorldManager.getInstance().getWorlds().get(i).getItem());
+                } else {
+                    System.out.println("Es gibt nicht aktivierte Welten!");
+                }
+            }
+        });
+        globalEventHandler.addListener(PlayerUseItemEvent.class, new ClickListener());
+        try {
+            PORT = Integer.parseInt(args[0]);
+        } catch (Exception e) {
+            if (args.length != 0) System.out.println("Given port doesn't work.");
+        }
+        // Start the server on port default port 25565 if none is given
+        System.out.println("Running on " + IP + ":" + PORT);
+        minecraftServer.start(IP, PORT);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/eu/mhsl/craftattack/worldmuseum/listener/ClickListener.java b/src/main/java/eu/mhsl/craftattack/worldmuseum/listener/ClickListener.java
new file mode 100755
index 0000000..35e1c03
--- /dev/null
+++ b/src/main/java/eu/mhsl/craftattack/worldmuseum/listener/ClickListener.java
@@ -0,0 +1,37 @@
+package eu.mhsl.craftattack.worldmuseum.listener;
+
+import net.minestom.server.entity.Player;
+import net.minestom.server.event.player.PlayerUseItemEvent;
+import net.minestom.server.inventory.Inventory;
+import net.minestom.server.inventory.InventoryType;
+import net.minestom.server.item.ItemStack;
+import net.minestom.server.item.Material;
+
+import java.util.function.Consumer;
+
+public class ClickListener implements Consumer<PlayerUseItemEvent> {
+
+    @Override
+    public void accept(PlayerUseItemEvent playerUseItemEvent) {
+        Player p = playerUseItemEvent.getPlayer();
+        ItemStack usedItem = playerUseItemEvent.getItemStack();
+
+
+
+
+        Inventory inventory = new Inventory(InventoryType.WINDOW_3X3, "asdasd");
+        inventory.setItemStack(0, ItemStack.builder(Material.GRASS_BLOCK).build());
+        p.openInventory(inventory);
+
+
+//        for (int i = 0; i < WorldManager.getInstance().getWorlds().size(); i++) {
+//            World world =  WorldManager.getInstance().getWorlds().get(i);
+//
+//            if (world.getItem().equals(usedItem)) {
+//                if (p.getInstance().equals(world)) return;
+//                p.setInstance(world, world.getSpawn());
+//            }
+//        }
+
+    }
+}
diff --git a/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/World.java b/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/World.java
new file mode 100755
index 0000000..924415e
--- /dev/null
+++ b/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/World.java
@@ -0,0 +1,83 @@
+package eu.mhsl.craftattack.worldmuseum.worlds;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import net.kyori.adventure.text.Component;
+import net.minestom.server.MinecraftServer;
+import net.minestom.server.coordinate.Pos;
+import net.minestom.server.instance.AnvilLoader;
+import net.minestom.server.instance.InstanceContainer;
+import net.minestom.server.item.ItemStack;
+import net.minestom.server.item.Material;
+import net.minestom.server.utils.NamespaceID;
+import net.minestom.server.world.DimensionType;
+
+import java.io.*;
+import java.util.UUID;
+
+public class World extends InstanceContainer {
+    private static DimensionType dimension = DimensionType.builder(NamespaceID.from("mhsl:worldview_by_olischma")).height(400).ambientLight(2.0f).build();
+    private File file;
+    private ItemStack item;
+    private String name = "default";
+    private Pos spawn = new Pos(0,0,0);
+    private Material material = Material.GRASS_BLOCK;
+    private boolean enabled = false;
+    private String defaultConfig = "{\n" +
+            "  \"enabled\": false,\n" +
+            "  \"name\": \"DEFAULT_NAME\",\n" +
+            "  \"material\": \"GRASS_BLOCK\",\n" +
+            "  \"spawn\": {\n" +
+            "    \"x\": 0,\n" +
+            "    \"y\": 0,\n" +
+            "    \"z\": 0\n" +
+            "  },\n" +
+            "  \"tags\": [\n" +
+            "    \"RANDOM_TAG\"\n" +
+            "  ]\n" +
+            "}";
+
+    static {
+        MinecraftServer.getDimensionTypeManager().addDimension(dimension);
+    }
+
+    public World(File file) {
+        super(UUID.randomUUID(), dimension, new AnvilLoader(file.getPath()));
+        MinecraftServer.getInstanceManager().registerInstance(this);
+        this.file = file;
+        try {
+            File checkFile = new File(file.getPath() + "/config.json");
+            if (checkFile.createNewFile()) {
+                FileWriter fileWriter = new FileWriter(file.getPath() + "/config.json");
+                fileWriter.write(defaultConfig);
+                fileWriter.close();
+            }
+        } catch (IOException e){
+            e.printStackTrace();
+        }
+
+
+        try {
+            JsonObject config = (JsonObject) JsonParser.parseReader(new FileReader(file.getPath() + "/config.json"));
+            this.name = config.get("name").getAsString();
+            JsonObject spawn = config.getAsJsonObject("spawn");
+            this.spawn = new Pos(spawn.get("x").getAsDouble(), spawn.get("y").getAsDouble(), spawn.get("z").getAsDouble());
+            this.material = Material.values().stream().filter(m -> m.name().equals(config.get("material").getAsString())).findFirst().orElse(Material.GRASS_BLOCK);
+            this.enabled = config.get("enabled").getAsBoolean();
+
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+        item = ItemStack.builder(material).displayName(Component.text(name)).build();
+    }
+
+    public ItemStack getItem() {
+        return item;
+    }
+    public Pos getSpawn() {
+        return spawn;
+    }
+    public boolean isEnabled() {
+        return enabled;
+    }
+}
diff --git a/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/WorldManager.java b/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/WorldManager.java
new file mode 100755
index 0000000..d70390e
--- /dev/null
+++ b/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/WorldManager.java
@@ -0,0 +1,38 @@
+package eu.mhsl.craftattack.worldmuseum.worlds;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+public class WorldManager {
+    private static WorldManager instance;
+    private List<World> worlds = new ArrayList<>();
+
+    public static WorldManager getInstance() {
+        if (instance == null) {
+            instance = new WorldManager();
+        }
+        return instance;
+    }
+    public void loadWorlds() {
+        File saveDirectory = new File("saves");
+        List<File> worldFolders = getFolderNames(saveDirectory);
+        for (File f: worldFolders
+        ) {
+            worlds.add(new World(f));
+        }
+    }
+
+    private List<File> getFolderNames(File curDir) {
+        File[] fileList = curDir.listFiles();
+        List<File> returnFolders = new ArrayList<>();
+        for (File f: fileList) {
+            if (f.isDirectory()) returnFolders.add(f);
+        }
+        return returnFolders;
+    }
+
+    public List<World> getWorlds() {
+        return worlds;
+    }
+}
diff --git a/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/default.json b/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/default.json
new file mode 100755
index 0000000..ea8e42f
--- /dev/null
+++ b/src/main/java/eu/mhsl/craftattack/worldmuseum/worlds/default.json
@@ -0,0 +1,13 @@
+{
+  "enabled": false,
+  "name": "DEFAULT_NAME",
+  "material": "GRASS_BLOCK",
+  "spawn": {
+    "x": 0,
+    "y": 0,
+    "z": 0
+  },
+  "tags": [
+    "RANDOM_TAG"
+  ]
+}
\ No newline at end of file