diff --git a/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/DeathrunChallengeEvent.java b/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/DeathrunChallengeEvent.java
index 4147385..cad9bfb 100644
--- a/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/DeathrunChallengeEvent.java
+++ b/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/DeathrunChallengeEvent.java
@@ -151,12 +151,14 @@
             } else {
                 World world = Bukkit.getWorld("world");
                 world.setGameRule(GameRule.MAX_ENTITY_CRAMMING, Bukkit.getServer().getMaxPlayers());
-                for (Player pp : Bukkit.getOnlinePlayers()) {
-                    plugin.getScoreManager().join(new ChallengePlayer(pp.getUniqueId()));
-                    Location spawn = world.getSpawnLocation();
-                    spawn.setYaw(-90f);
-                    pp.teleport(spawn);
-                }
+                Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, () -> {
+                    for (Player pp : Bukkit.getOnlinePlayers()) {
+                        plugin.getScoreManager().join(new ChallengePlayer(pp.getUniqueId()));
+                        Location spawn = world.getSpawnLocation();
+                        spawn.setYaw(-90f);
+                        pp.teleport(spawn);
+                    }
+                }, 1L);
                 startUpdateTask();
             }
         }
diff --git a/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/SammelFieberChallengeEvent.java b/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/SammelFieberChallengeEvent.java
index 1b13c88..2173895 100644
--- a/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/SammelFieberChallengeEvent.java
+++ b/src/main/java/de/fanta/challenges/challenges/ChallengeEvents/SammelFieberChallengeEvent.java
@@ -32,12 +32,14 @@
 
 import java.util.HashMap;
 import java.util.Objects;
+import java.util.UUID;
 
 public class SammelFieberChallengeEvent implements Listener {
 
     public static BossBar bossBar;
 
     public static HashMap<ChallengeTeam, BossBar> bossBarList = new HashMap<>();
+    public static HashMap<UUID, BossBar> bossBarPlayerList = new HashMap<>();
     public static Location hopperloc;
     private static Material material;
     private static boolean running;
@@ -72,6 +74,10 @@
         return count;
     }
 
+    private boolean isSinglePlayer() {
+        return SammelFieberSettingsGui.singlePlayer;
+    }
+
     @EventHandler
     public void onActivation(TimerChangedEvent event) {
         if (Objects.equals(Config.getString("event.type"), "sammelfieber")) {
@@ -80,11 +86,15 @@
                 if (stack != null && getHopperLocation() != null) {
                     setMaterial(stack.getType());
                     if (!Config.getBoolean("event.teams")) {
-                        bossBar = Bukkit.createBossBar(ChatUtil.GREEN + "Es wurden " + ChatUtil.BLUE + count + " " + new ItemStack(getMaterial()).getI18NDisplayName() + ChatUtil.GREEN + " abgegeben. Das sind " + ChatUtil.BLUE + count * SammelFieberSettingsGui.MONEY + " Cubes", BarColor.GREEN, BarStyle.SOLID);
-                        bossBar.setVisible(true);
-                        for (Player pp : Bukkit.getOnlinePlayers()) {
-                            plugin.getScoreManager().join(new ChallengePlayer(pp.getUniqueId()));
-                            bossBar.addPlayer(pp);
+                        if (isSinglePlayer()) {
+                            updatePlayerBossBar();
+                        } else {
+                            bossBar = Bukkit.createBossBar(ChatUtil.GREEN + "Es wurden " + ChatUtil.BLUE + count + " " + new ItemStack(getMaterial()).getI18NDisplayName() + ChatUtil.GREEN + " abgegeben. Das sind " + ChatUtil.BLUE + count * SammelFieberSettingsGui.MONEY + " Cubes", BarColor.GREEN, BarStyle.SOLID);
+                            bossBar.setVisible(true);
+                            for (Player pp : Bukkit.getOnlinePlayers()) {
+                                plugin.getScoreManager().join(new ChallengePlayer(pp.getUniqueId()));
+                                bossBar.addPlayer(pp);
+                            }
                         }
                     } else {
                         for (ChallengeTeam team : TeamUtils.getTeams()) {
@@ -138,7 +148,11 @@
                 count = count + stack.getAmount();
                 plugin.getScoreManager().updateScore(new ChallengePlayer(player.getUniqueId()), stack.getAmount());
                 player.playSound(player.getLocation(), Sound.BLOCK_NOTE_BLOCK_PLING, 1.0F, 2.0F);
-                bossBar.setTitle(ChatUtil.GREEN + "Es wurden " + ChatUtil.BLUE + count + " " + new ItemStack(getMaterial()).getI18NDisplayName() + ChatUtil.GREEN + " abgegeben. Das sind " + ChatUtil.BLUE + count * SammelFieberSettingsGui.MONEY + " Cubes");
+                if (isSinglePlayer()) {
+                    updatePlayerBossBar();
+                } else {
+                    bossBar.setTitle(ChatUtil.GREEN + "Es wurden " + ChatUtil.BLUE + count + " " + new ItemStack(getMaterial()).getI18NDisplayName() + ChatUtil.GREEN + " abgegeben. Das sind " + ChatUtil.BLUE + count * SammelFieberSettingsGui.MONEY + " Cubes");
+                }
             } else {
                 ChallengeTeam team = TeamUtils.getTeam(meta.getDisplayName());
                 if (team != null) {
@@ -160,6 +174,23 @@
         Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, () -> e.getInventory().clear(), 1);
     }
 
+    private void updatePlayerBossBar() {
+        for (Player pp : Bukkit.getOnlinePlayers()) {
+            ChallengePlayer challengePlayer = new ChallengePlayer(pp.getUniqueId());
+            plugin.getScoreManager().join(challengePlayer);
+            if (bossBarPlayerList.containsKey(pp.getUniqueId())) {
+                BossBar playerBar = bossBarPlayerList.get(pp.getUniqueId());
+                playerBar.setTitle(ChatUtil.GREEN + "Du hast " + ChatUtil.BLUE + plugin.getScoreManager().getScore(challengePlayer) + " " + new ItemStack(getMaterial()).getI18NDisplayName() + ChatUtil.GREEN + " abgegeben." + ChatUtil.RED + " | " + ChatUtil.GREEN + "Platzierung: " + plugin.getScoreManager().getPosition(challengePlayer));
+                playerBar.addPlayer(pp);
+            } else {
+                BossBar playerBar = Bukkit.createBossBar(ChatUtil.GREEN + "Du hast " + ChatUtil.BLUE + plugin.getScoreManager().getScore(challengePlayer) + " " + new ItemStack(getMaterial()).getI18NDisplayName() + ChatUtil.GREEN + " abgegeben." + ChatUtil.RED + " | " + ChatUtil.GREEN + "Platzierung: " + plugin.getScoreManager().getPosition(challengePlayer), BarColor.GREEN, BarStyle.SOLID);
+                playerBar.setVisible(true);
+                playerBar.addPlayer(pp);
+                bossBarPlayerList.put(pp.getUniqueId(), playerBar);
+            }
+        }
+    }
+
     @EventHandler
     public void onHopperMoveItem(InventoryMoveItemEvent e) {
         if (!isRunning()) {
@@ -248,8 +279,12 @@
             return;
         }
         if (!Config.getBoolean("event.teams")) {
-            plugin.getScoreManager().join(new ChallengePlayer(e.getPlayer().getUniqueId()));
-            bossBar.addPlayer(e.getPlayer());
+            if (isSinglePlayer()) {
+                updatePlayerBossBar();
+            } else {
+                plugin.getScoreManager().join(new ChallengePlayer(e.getPlayer().getUniqueId()));
+                bossBar.addPlayer(e.getPlayer());
+            }
         } else {
             ChallengeTeam team = TeamUtils.getPlayerTeam(e.getPlayer());
             if (team != null) {
diff --git a/src/main/java/de/fanta/challenges/guis/eventgui/SammelFieberSettingsGui.java b/src/main/java/de/fanta/challenges/guis/eventgui/SammelFieberSettingsGui.java
index b630f48..1fb7eba 100644
--- a/src/main/java/de/fanta/challenges/guis/eventgui/SammelFieberSettingsGui.java
+++ b/src/main/java/de/fanta/challenges/guis/eventgui/SammelFieberSettingsGui.java
@@ -27,11 +27,13 @@
     private static final Challenges plugin = Challenges.getPlugin();
     private static final int SET_HOPPER_INDEX = 0;
     private static final int ADD_MONEY_INDEX = 2;
+    private static final int SINGLEPLAYER_INDEX = 3;
     private static final int ITEM_INDEX = 4;
     private static final int MONEY_INDEX = 5;
     private static final int BACK_INDEX = 6;
     private static final int REMOVE_MONEY_INDEX = 8;
     public static int MONEY = 100;
+    public static boolean singlePlayer = true;
 
     public static ItemStack eventItem = null;
 
@@ -89,6 +91,11 @@
                 }
                 event.setCancelled(true);
             }
+            case SINGLEPLAYER_INDEX -> {
+                singlePlayer = !singlePlayer;
+                rebuildInventory();
+                event.setCancelled(true);
+            }
             case ITEM_INDEX -> {
                 switch (event.getAction()) {
                     case MOVE_TO_OTHER_INVENTORY:
@@ -148,6 +155,8 @@
                         item = CustomHeads.RAINBOW_ARROW_UP.getHead(ChatUtil.GREEN + "Add Money", ChatUtil.GREEN + "Klick = +10", ChatUtil.GREEN + "Shift + Klick = +1");
                 case MONEY_INDEX ->
                         item = GUIUtils.createGuiItem(Material.GOLD_INGOT, ChatUtil.GREEN + "Money: " + MONEY);
+                case SINGLEPLAYER_INDEX ->
+                        item = singlePlayer ? GUIUtils.createGuiItem(Material.EMERALD, ChatUtil.GREEN + "SiglePlayer", true) : GUIUtils.createGuiItem(Material.EMERALD, ChatUtil.RED + "SiglePlayer", false);
                 case BACK_INDEX -> item = CustomHeads.RAINBOW_ARROW_BACKWARD_II.getHead(ChatUtil.GREEN + "Zurück");
                 case REMOVE_MONEY_INDEX ->
                         item = CustomHeads.RAINBOW_ARROW_DOWN.getHead(ChatUtil.RED + "Remove Money", ChatUtil.RED + "Klick = -10", ChatUtil.RED + "Shift + Klick = -1");