diff --git a/Effekte Challenge V2/src/main/java/com/xonics/ef/classes/Challenge.java b/Effekte Challenge V2/src/main/java/com/xonics/ef/classes/EffekteChallenge.java
similarity index 86%
rename from Effekte Challenge V2/src/main/java/com/xonics/ef/classes/Challenge.java
rename to Effekte Challenge V2/src/main/java/com/xonics/ef/classes/EffekteChallenge.java
index ec6bac7..08619e1 100644
--- a/Effekte Challenge V2/src/main/java/com/xonics/ef/classes/Challenge.java	
+++ b/Effekte Challenge V2/src/main/java/com/xonics/ef/classes/EffekteChallenge.java	
@@ -10,20 +10,19 @@ import org.bukkit.boss.BarColor;
 import org.bukkit.boss.BarStyle;
 import com.xonics.ef.main;
 
-public class Challenge {
-
-    private boolean isRunning;
+public class EffekteChallenge {
+    private static boolean isRunning;
     private List<Player> players;
     private BukkitRunnable task;
     private TimeManager tm;
 
-    public Challenge(List<Player> participants, int timer) {
+    public EffekteChallenge(List<Player> participants, int timer) {
         this.players = participants;
-        this.isRunning = false;
+        isRunning = false;
         this.tm.setTime(timer);
     }
 
-    public Challenge(List<Player> participants) {
+    public EffekteChallenge(List<Player> participants) {
         this(participants, 20);
     }
 
@@ -59,12 +58,14 @@ public class Challenge {
                 }
             };
             task.runTaskTimer(main.getInstance(), 0L, 20L);
+        } else {
+            Bukkit.broadcastMessage("§cDie Challenge läuft bereits!");
         }
     }
 
     public void stop() {
         this.task.cancel();
-        this.isRunning = false;
+        isRunning = false;
         Timer.stop();
     }
 
@@ -91,4 +92,8 @@ public class Challenge {
         }
     }
 
+    public static boolean isRunning() {
+        return isRunning;
+    }
+
 }
diff --git a/Effekte Challenge V2/src/main/java/com/xonics/ef/commands/ChallengeCommands.java b/Effekte Challenge V2/src/main/java/com/xonics/ef/commands/ChallengeCommands.java
new file mode 100644
index 0000000..5ce1ac6
--- /dev/null
+++ b/Effekte Challenge V2/src/main/java/com/xonics/ef/commands/ChallengeCommands.java	
@@ -0,0 +1,55 @@
+package com.xonics.ef.commands;
+
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.Bukkit;
+import org.bukkit.command.Command;
+import com.xonics.ef.classes.EffekteChallenge;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ChallengeCommands implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        int effektcooldown = 0;
+        if (args.length > 0) {
+            try {
+                effektcooldown = Integer.parseInt(args[0]);
+            } catch (NumberFormatException e) {
+                sender.sendMessage(args[0] + " ist keine gültige Zahl!");
+                return false;
+            }
+        }
+        List<Player> players = new ArrayList<Player>();
+        for (Player p : Bukkit.getOnlinePlayers()) {
+            players.add(p);
+        }
+
+        EffekteChallenge challenge = new EffekteChallenge(players, effektcooldown);
+
+        switch (command.getName().toLowerCase()) {
+            case "start":
+                if (EffekteChallenge.isRunning()) {
+                    sender.sendMessage("§cDas Challenge läuft bereits!");
+                    return false;
+                } else {
+                    challenge.start();
+                    sender.sendMessage("Die Challenge wurde gestartet.");
+                    return true;
+                }
+
+            case "stop":
+                if (!EffekteChallenge.isRunning()) {
+                    sender.sendMessage("§cDie Challenge läuft nicht!");
+                    return false;
+                } else {
+                    challenge.stop();
+                    challenge = null;
+                    sender.sendMessage("Die Challenge wurde gestoppt.");
+                    return true;
+                }
+        }
+        return false;
+    }
+}
\ No newline at end of file
diff --git a/Effekte Challenge V2/src/main/java/com/xonics/ef/main.java b/Effekte Challenge V2/src/main/java/com/xonics/ef/main.java
index 3d5baa3..9b10a6e 100644
--- a/Effekte Challenge V2/src/main/java/com/xonics/ef/main.java	
+++ b/Effekte Challenge V2/src/main/java/com/xonics/ef/main.java	
@@ -3,6 +3,7 @@ package com.xonics.ef;
 import org.bukkit.plugin.java.JavaPlugin;
 import com.xonics.ef.managers.PluginManager;
 import com.xonics.ef.listeners.PlayerListener;
+import com.xonics.ef.commands.ChallengeCommands;
 import com.xonics.ef.commands.TimerCommands;
 
 public class main extends JavaPlugin {
@@ -27,6 +28,8 @@ public class main extends JavaPlugin {
         // Register commands
         getCommand("pause").setExecutor(new TimerCommands());
         getCommand("resume").setExecutor(new TimerCommands());
+        getCommand("start").setExecutor(new ChallengeCommands());
+        getCommand("stop").setExecutor(new ChallengeCommands());
 
         getLogger().info("Effekte Challenge V2 has been enabled!");
     }