diff --git a/src/main/java/de/nexuslobby/utils/ConfigUpdater.java b/src/main/java/de/nexuslobby/utils/ConfigUpdater.java
new file mode 100644
index 0000000..675f7f2
--- /dev/null
+++ b/src/main/java/de/nexuslobby/utils/ConfigUpdater.java
@@ -0,0 +1,78 @@
+package de.nexuslobby.utils;
+
+import de.nexuslobby.NexusLobby;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ConfigUpdater {
+
+    public static void updateConfig(String fileName) {
+        NexusLobby plugin = NexusLobby.getInstance();
+        File configFile = new File(plugin.getDataFolder(), fileName);
+
+        if (!configFile.exists()) {
+            plugin.saveResource(fileName, false);
+            return;
+        }
+
+        FileConfiguration serverConfig = YamlConfiguration.loadConfiguration(configFile);
+        List<String> newFileContent = new ArrayList<>();
+        
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(plugin.getResource(fileName), StandardCharsets.UTF_8))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                String trimmed = line.trim();
+
+                // 1. Kommentare, Leerzeilen und Listen-Elemente direkt übernehmen
+                if (trimmed.startsWith("#") || trimmed.isEmpty() || trimmed.startsWith("-")) {
+                    newFileContent.add(line);
+                    continue;
+                }
+
+                // 2. Prüfen ob es ein Key ist
+                if (trimmed.contains(":") && !trimmed.startsWith("-")) {
+                    String key = trimmed.split(":")[0];
+                    
+                    // WICHTIG: Nur wenn der Key KEINE Sektion ist, darf er überschrieben werden
+                    if (serverConfig.contains(key) && !serverConfig.isConfigurationSection(key)) {
+                        String indentation = line.substring(0, line.indexOf(trimmed));
+                        Object value = serverConfig.get(key);
+                        newFileContent.add(indentation + key + ": " + formatValue(value));
+                    } else {
+                        // Es ist eine Sektion oder ein neuer Key -> Original aus JAR übernehmen
+                        newFileContent.add(line);
+                    }
+                } else {
+                    newFileContent.add(line);
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        // 3. Datei sauber speichern
+        try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(configFile), StandardCharsets.UTF_8))) {
+            for (String outputLine : newFileContent) {
+                writer.write(outputLine);
+                writer.newLine();
+            }
+        } catch (IOException e) {
+            plugin.getLogger().severe("Konnte " + fileName + " nicht speichern!");
+        }
+    }
+
+    private static String formatValue(Object value) {
+        if (value == null) return "";
+        if (value instanceof String) {
+            // Verhindert das "Zerschießen" der Config durch Sonderzeichen
+            String s = (String) value;
+            return "\"" + s.replace("\"", "\\\"") + "\"";
+        }
+        return value.toString();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/nexuslobby/utils/DoubleJump.java b/src/main/java/de/nexuslobby/utils/DoubleJump.java
new file mode 100644
index 0000000..c1abce8
--- /dev/null
+++ b/src/main/java/de/nexuslobby/utils/DoubleJump.java
@@ -0,0 +1,50 @@
+package de.nexuslobby.utils;
+
+import de.nexuslobby.NexusLobby;
+import org.bukkit.GameMode;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerMoveEvent;
+import org.bukkit.event.player.PlayerToggleFlightEvent;
+import org.bukkit.util.Vector;
+
+public class DoubleJump implements Listener {
+
+    @EventHandler
+    public void onJoin(PlayerJoinEvent event) {
+        if (NexusLobby.getInstance().getConfig().getBoolean("doublejump.enabled", true)) {
+            event.getPlayer().setAllowFlight(true);
+        }
+    }
+
+    @EventHandler
+    public void onFly(PlayerToggleFlightEvent event) {
+        Player player = event.getPlayer();
+        if (player.getGameMode() == GameMode.CREATIVE || player.getGameMode() == GameMode.SPECTATOR) return;
+
+        if (NexusLobby.getInstance().getConfig().getBoolean("doublejump.enabled", true)) {
+            event.setCancelled(true);
+            player.setAllowFlight(false);
+            player.setFlying(false);
+
+            double velocity = NexusLobby.getInstance().getConfig().getDouble("doublejump.velocity", 1.0);
+            double horizontal = NexusLobby.getInstance().getConfig().getDouble("doublejump.horizontal", 0.2);
+
+            Vector v = player.getLocation().getDirection().multiply(horizontal).setY(velocity);
+            player.setVelocity(v);
+        }
+    }
+
+    @EventHandler
+    public void onMove(PlayerMoveEvent event) {
+        Player player = event.getPlayer();
+        if (player.getGameMode() != GameMode.CREATIVE && player.getLocation().subtract(0, 0.1, 0).getBlock().getType() != Material.AIR) {
+            if (NexusLobby.getInstance().getConfig().getBoolean("doublejump.enabled", true)) {
+                player.setAllowFlight(true);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/nexuslobby/utils/ExampleUtils.java b/src/main/java/de/nexuslobby/utils/ExampleUtils.java
new file mode 100644
index 0000000..0950390
--- /dev/null
+++ b/src/main/java/de/nexuslobby/utils/ExampleUtils.java
@@ -0,0 +1,8 @@
+package de.nexuslobby.utils;
+
+public class ExampleUtils {
+
+    public static String format(String text) {
+        return text.replace("&", "§");
+    }
+}
diff --git a/src/main/java/de/nexuslobby/utils/MaintenanceListener.java b/src/main/java/de/nexuslobby/utils/MaintenanceListener.java
new file mode 100644
index 0000000..d7ca9ab
--- /dev/null
+++ b/src/main/java/de/nexuslobby/utils/MaintenanceListener.java
@@ -0,0 +1,32 @@
+package de.nexuslobby.utils;
+
+import de.nexuslobby.NexusLobby;
+import org.bukkit.ChatColor;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerLoginEvent;
+
+public class MaintenanceListener implements Listener {
+
+    /**
+     * Gibt zurück, ob der Wartungsmodus in der Config aktiviert ist.
+     * Wird für den PlaceholderAPI-Platzhalter benötigt.
+     */
+    public static boolean isMaintenance() {
+        return NexusLobby.getInstance().getConfig().getBoolean("maintenance.enabled", false);
+    }
+
+    @EventHandler(priority = EventPriority.HIGHEST)
+    public void onLogin(PlayerLoginEvent event) {
+        if (isMaintenance()) {
+            // Wenn der Spieler kein OP ist und keine Permission hat
+            if (!event.getPlayer().isOp() && !event.getPlayer().hasPermission("nexuslobby.join.maintenance")) {
+                String kickMsg = ChatColor.translateAlternateColorCodes('&', 
+                    NexusLobby.getInstance().getConfig().getString("maintenance.kick_message", "&cWartungsarbeiten!"));
+                
+                event.disallow(PlayerLoginEvent.Result.KICK_OTHER, kickMsg);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/nexuslobby/utils/PlayerHider.java b/src/main/java/de/nexuslobby/utils/PlayerHider.java
new file mode 100644
index 0000000..078baaa
--- /dev/null
+++ b/src/main/java/de/nexuslobby/utils/PlayerHider.java
@@ -0,0 +1,70 @@
+package de.nexuslobby.utils;
+
+import de.nexuslobby.NexusLobby;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+public class PlayerHider implements Listener {
+
+    private final List<UUID> hidden = new ArrayList<>();
+
+    @EventHandler
+    public void onJoin(PlayerJoinEvent event) {
+        if (!NexusLobby.getInstance().getConfig().getBoolean("hider.enabled", true)) return;
+        
+        Material material = Material.valueOf(NexusLobby.getInstance().getConfig().getString("hider.item", "REDSTONE"));
+        int slot = NexusLobby.getInstance().getConfig().getInt("hider.slot", 8);
+        
+        ItemStack item = new ItemStack(material);
+        ItemMeta meta = item.getItemMeta();
+        meta.setDisplayName(NexusLobby.getInstance().getConfig().getString("hider.messages.all").replace("&", "§"));
+        item.setItemMeta(meta);
+        
+        event.getPlayer().getInventory().setItem(slot, item);
+    }
+
+    @EventHandler
+    public void onInteract(PlayerInteractEvent event) {
+        if (event.getAction() != Action.RIGHT_CLICK_AIR && event.getAction() != Action.RIGHT_CLICK_BLOCK) return;
+        if (event.getItem() == null) return;
+
+        Player player = event.getPlayer();
+        String allMsg = NexusLobby.getInstance().getConfig().getString("hider.messages.all").replace("&", "§");
+        String noneMsg = NexusLobby.getInstance().getConfig().getString("hider.messages.none").replace("&", "§");
+
+        if (event.getItem().getItemMeta().getDisplayName().equals(allMsg)) {
+            // Verstecken
+            hidden.add(player.getUniqueId());
+            for (Player target : Bukkit.getOnlinePlayers()) player.hidePlayer(NexusLobby.getInstance(), target);
+            
+            updateItem(player, noneMsg);
+            player.sendMessage(noneMsg);
+        } else if (event.getItem().getItemMeta().getDisplayName().equals(noneMsg)) {
+            // Zeigen
+            hidden.remove(player.getUniqueId());
+            for (Player target : Bukkit.getOnlinePlayers()) player.showPlayer(NexusLobby.getInstance(), target);
+            
+            updateItem(player, allMsg);
+            player.sendMessage(allMsg);
+        }
+    }
+
+    private void updateItem(Player player, String name) {
+        ItemStack item = player.getInventory().getItemInHand();
+        ItemMeta meta = item.getItemMeta();
+        meta.setDisplayName(name);
+        item.setItemMeta(meta);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/nexuslobby/utils/VoidProtection.java b/src/main/java/de/nexuslobby/utils/VoidProtection.java
new file mode 100644
index 0000000..9efc30c
--- /dev/null
+++ b/src/main/java/de/nexuslobby/utils/VoidProtection.java
@@ -0,0 +1,29 @@
+package de.nexuslobby.utils;
+
+import de.nexuslobby.NexusLobby;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerMoveEvent;
+
+public class VoidProtection implements Listener {
+
+    @EventHandler
+    public void onMove(PlayerMoveEvent event) {
+        if (!NexusLobby.getInstance().getConfig().getBoolean("void_protection.enabled", true)) return;
+        
+        Player player = event.getPlayer();
+        if (player.getLocation().getY() < 0) {
+            if (NexusLobby.getInstance().getConfig().getBoolean("void_protection.teleport_to_spawn", true)) {
+                Location spawn = player.getWorld().getSpawnLocation();
+                player.teleport(spawn);
+                String msg = NexusLobby.getInstance().getConfig().getString("void_protection.message");
+                if (msg != null && !msg.isEmpty()) {
+                    player.sendMessage(msg.replace("&", "§"));
+                }
+            }
+        }
+    }
+}
\ No newline at end of file