diff --git a/cmd/client/game_render.go b/cmd/client/game_render.go
index b9a050a..5f4e073 100644
--- a/cmd/client/game_render.go
+++ b/cmd/client/game_render.go
@@ -5,7 +5,10 @@ import (
 	"image/color"
 	"log"
 	"math"
+	"sort"
+	"time"
 
+	"git.zb-server.de/ZB-Server/EscapeFromTeacher/pkg/game"
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/inpututil"
 	"github.com/hajimehoshi/ebiten/v2/text"
@@ -51,6 +54,7 @@ func (g *Game) UpdateGame() {
 
 	// --- 4. CLIENT PREDICTION ---
 	if g.connected {
+		g.predictionMutex.Lock()
 		// Sequenznummer erhöhen
 		g.inputSequence++
 		input.Sequence = g.inputSequence
@@ -60,6 +64,7 @@ func (g *Game) UpdateGame() {
 
 		// Lokale Physik sofort anwenden (Prediction)
 		g.ApplyInput(input)
+		g.predictionMutex.Unlock()
 
 		// Input an Server senden
 		g.SendInputWithSequence(input)
@@ -156,6 +161,42 @@ func (g *Game) handleTouchInput() {
 // --- RENDERING LOGIC ---
 
 func (g *Game) DrawGame(screen *ebiten.Image) {
+	// WICHTIG: GAMEOVER-Check ZUERST, bevor wir Locks holen!
+	g.stateMutex.Lock()
+	status := g.gameState.Status
+	g.stateMutex.Unlock()
+
+	if status == "GAMEOVER" {
+		// Game Over Screen - komplett separates Rendering ohne weitere Locks
+		g.stateMutex.Lock()
+		myScore := 0
+		for _, p := range g.gameState.Players {
+			if p.Name == g.playerName {
+				myScore = p.Score
+				break
+			}
+		}
+		g.stateMutex.Unlock()
+
+		g.DrawGameOverLeaderboard(screen, myScore)
+		return // Früher Return, damit Game-UI nicht mehr gezeichnet wird
+	}
+
+	// State Locken für Datenzugriff
+	g.stateMutex.Lock()
+
+	// Prüfe ob Spieler tot ist
+	isDead := false
+	myScore := 0
+	for _, p := range g.gameState.Players {
+		if p.Name == g.playerName {
+			isDead = !p.IsAlive || p.IsSpectator
+			myScore = p.Score
+			break
+		}
+	}
+	g.stateMutex.Unlock()
+
 	// 1. Hintergrund & Boden
 	screen.Fill(ColSky)
 
@@ -175,10 +216,7 @@ func (g *Game) DrawGame(screen *ebiten.Image) {
 			continue
 		}
 
-		// DEBUG: Chunk-Details loggen (nur einmal)
-		if len(chunkDef.Objects) == 0 {
-			log.Printf("⚠️ Chunk '%s' hat 0 Objekte! Width=%d", activeChunk.ChunkID, chunkDef.Width)
-		}
+		// Start-Chunk hat absichtlich keine Objekte
 
 		for _, obj := range chunkDef.Objects {
 			// Asset zeichnen
@@ -230,22 +268,15 @@ func (g *Game) DrawGame(screen *ebiten.Image) {
 		text.Draw(screen, dist, basicfont.Face7x13, ScreenWidth-150, 30, ColText)
 
 		// Score anzeigen
-		for _, p := range g.gameState.Players {
-			if p.Name == g.playerName {
-				scoreStr := fmt.Sprintf("Score: %d", p.Score)
-				text.Draw(screen, scoreStr, basicfont.Face7x13, ScreenWidth-150, 50, ColText)
-				break
-			}
-		}
-	} else if g.gameState.Status == "GAMEOVER" {
-		// Game Over Screen mit allen Scores
-		text.Draw(screen, "GAME OVER", basicfont.Face7x13, ScreenWidth/2-50, 100, color.RGBA{255, 0, 0, 255})
+		scoreStr := fmt.Sprintf("Score: %d", myScore)
+		text.Draw(screen, scoreStr, basicfont.Face7x13, ScreenWidth-150, 50, ColText)
 
-		y := 150
-		for _, p := range g.gameState.Players {
-			scoreMsg := fmt.Sprintf("%s: %d pts", p.Name, p.Score)
-			text.Draw(screen, scoreMsg, basicfont.Face7x13, ScreenWidth/2-80, y, color.White)
-			y += 20
+		// Spectator Overlay wenn tot
+		if isDead {
+			// Halbtransparenter roter Overlay
+			vector.DrawFilledRect(screen, 0, 0, ScreenWidth, 80, color.RGBA{150, 0, 0, 180}, false)
+			text.Draw(screen, "☠ DU BIST TOT - SPECTATOR MODE ☠", basicfont.Face7x13, ScreenWidth/2-140, 30, color.White)
+			text.Draw(screen, fmt.Sprintf("Dein Final Score: %d", myScore), basicfont.Face7x13, ScreenWidth/2-90, 55, color.RGBA{255, 255, 0, 255})
 		}
 	}
 
@@ -349,3 +380,154 @@ func (g *Game) DrawAsset(screen *ebiten.Image, assetID string, worldX, worldY fl
 		)
 	}
 }
+
+// DrawGameOverLeaderboard zeigt Leaderboard mit Team-Name-Eingabe
+func (g *Game) DrawGameOverLeaderboard(screen *ebiten.Image, myScore int) {
+	screen.Fill(color.RGBA{20, 20, 30, 255})
+
+	// Leaderboard immer beim ersten Mal anfordern (ohne Lock hier!)
+	if !g.scoreSubmitted && g.gameMode == "solo" {
+		g.submitScore() // submitScore() ruft requestLeaderboard() auf
+	} else {
+		// Für Coop: Nur Leaderboard anfordern, nicht submitten
+		g.leaderboardMutex.Lock()
+		needsLeaderboard := len(g.leaderboard) == 0 && g.connected
+		g.leaderboardMutex.Unlock()
+
+		if needsLeaderboard {
+			g.requestLeaderboard()
+		}
+	}
+
+	// Großes GAME OVER
+	text.Draw(screen, "GAME OVER", basicfont.Face7x13, ScreenWidth/2-50, 60, color.RGBA{255, 0, 0, 255})
+
+	// Linke Seite: Raum-Ergebnisse - Daten KOPIEREN mit Lock, dann außerhalb zeichnen
+	text.Draw(screen, "=== RAUM ERGEBNISSE ===", basicfont.Face7x13, 50, 120, color.RGBA{255, 255, 0, 255})
+
+	type playerScore struct {
+		name  string
+		score int
+	}
+
+	// Lock NUR für Datenkopie
+	g.stateMutex.Lock()
+	players := make([]playerScore, 0, len(g.gameState.Players))
+	for _, p := range g.gameState.Players {
+		players = append(players, playerScore{name: p.Name, score: p.Score})
+	}
+	g.stateMutex.Unlock()
+
+	// Sortieren und Zeichnen OHNE Lock
+	sort.Slice(players, func(i, j int) bool {
+		return players[i].score > players[j].score
+	})
+
+	y := 150
+	for i, p := range players {
+		medal := ""
+		if i == 0 {
+			medal = "🥇 "
+		} else if i == 1 {
+			medal = "🥈 "
+		} else if i == 2 {
+			medal = "🥉 "
+		}
+		scoreMsg := fmt.Sprintf("%d. %s%s: %d pts", i+1, medal, p.name, p.score)
+		text.Draw(screen, scoreMsg, basicfont.Face7x13, 50, y, color.White)
+		y += 20
+	}
+
+	// Rechte Seite: Global Leaderboard - Daten KOPIEREN mit Lock, dann außerhalb zeichnen
+	text.Draw(screen, "=== TOP 10 BESTENLISTE ===", basicfont.Face7x13, 650, 120, color.RGBA{255, 215, 0, 255})
+
+	// Lock NUR für Datenkopie
+	g.leaderboardMutex.Lock()
+	leaderboardCopy := make([]game.LeaderboardEntry, len(g.leaderboard))
+	copy(leaderboardCopy, g.leaderboard)
+	g.leaderboardMutex.Unlock()
+
+	// Zeichnen OHNE Lock
+	ly := 150
+	if len(leaderboardCopy) == 0 {
+		text.Draw(screen, "Laden...", basicfont.Face7x13, 700, ly, color.Gray{150})
+	} else {
+		for i, entry := range leaderboardCopy {
+			if i >= 10 {
+				break
+			}
+			var col color.Color = color.White
+			marker := ""
+			if entry.PlayerCode == g.playerCode {
+				col = color.RGBA{0, 255, 0, 255}
+				marker = " ← DU"
+			}
+			medal := ""
+			if i == 0 {
+				medal = "🥇 "
+			} else if i == 1 {
+				medal = "🥈 "
+			} else if i == 2 {
+				medal = "🥉 "
+			}
+			leaderMsg := fmt.Sprintf("%d. %s%s: %d%s", i+1, medal, entry.PlayerName, entry.Score, marker)
+			text.Draw(screen, leaderMsg, basicfont.Face7x13, 650, ly, col)
+			ly += 20
+		}
+	}
+
+	// Team-Name-Eingabe nur für Coop-Host (in der Mitte unten)
+	if g.gameMode == "coop" && g.isHost {
+		text.Draw(screen, "Host: Gib Team-Namen ein", basicfont.Face7x13, ScreenWidth/2-100, ScreenHeight-180, color.RGBA{255, 215, 0, 255})
+
+		// Team-Name Feld
+		fieldW := 300
+		fieldX := ScreenWidth/2 - fieldW/2
+		fieldY := ScreenHeight - 140
+
+		col := color.RGBA{70, 70, 80, 255}
+		if g.activeField == "teamname" {
+			col = color.RGBA{90, 90, 100, 255}
+		}
+		vector.DrawFilledRect(screen, float32(fieldX), float32(fieldY), float32(fieldW), 40, col, false)
+		vector.StrokeRect(screen, float32(fieldX), float32(fieldY), float32(fieldW), 40, 2, color.RGBA{255, 215, 0, 255}, false)
+
+		display := g.teamName
+		if g.activeField == "teamname" && (time.Now().UnixMilli()/500)%2 == 0 {
+			display += "|"
+		}
+		if display == "" {
+			display = "Team Name..."
+		}
+		text.Draw(screen, display, basicfont.Face7x13, fieldX+10, fieldY+25, color.White)
+
+		// Submit Button
+		submitBtnY := ScreenHeight - 85
+		submitBtnW := 200
+		submitBtnX := ScreenWidth/2 - submitBtnW/2
+
+		btnCol := color.RGBA{0, 150, 0, 255}
+		if g.teamName == "" {
+			btnCol = color.RGBA{100, 100, 100, 255} // Grau wenn kein Name
+		}
+		vector.DrawFilledRect(screen, float32(submitBtnX), float32(submitBtnY), float32(submitBtnW), 40, btnCol, false)
+		vector.StrokeRect(screen, float32(submitBtnX), float32(submitBtnY), float32(submitBtnW), 40, 2, color.White, false)
+		text.Draw(screen, "SUBMIT SCORE", basicfont.Face7x13, submitBtnX+50, submitBtnY+25, color.White)
+	} else if g.gameMode == "solo" && g.scoreSubmitted {
+		// Solo: Zeige Bestätigungsmeldung
+		text.Draw(screen, "Score eingereicht!", basicfont.Face7x13, ScreenWidth/2-70, ScreenHeight-100, color.RGBA{0, 255, 0, 255})
+	} else if g.gameMode == "coop" && !g.isHost {
+		// Coop Non-Host: Warten auf Host
+		text.Draw(screen, "Warte auf Host...", basicfont.Face7x13, ScreenWidth/2-70, ScreenHeight-100, color.Gray{180})
+	}
+
+	// Back Button (oben links)
+	backBtnW, backBtnH := 120, 40
+	backBtnX, backBtnY := 20, 20
+	vector.DrawFilledRect(screen, float32(backBtnX), float32(backBtnY), float32(backBtnW), float32(backBtnH), color.RGBA{150, 0, 0, 255}, false)
+	vector.StrokeRect(screen, float32(backBtnX), float32(backBtnY), float32(backBtnW), float32(backBtnH), 2, color.White, false)
+	text.Draw(screen, "< ZURÜCK", basicfont.Face7x13, backBtnX+20, backBtnY+25, color.White)
+
+	// Unten: Anleitung
+	text.Draw(screen, "ESC oder ZURÜCK-Button = Menü", basicfont.Face7x13, ScreenWidth/2-110, ScreenHeight-30, color.Gray{180})
+}
diff --git a/cmd/client/main.go b/cmd/client/main.go
index fff6f46..5f68c6c 100644
--- a/cmd/client/main.go
+++ b/cmd/client/main.go
@@ -1,13 +1,15 @@
 package main
 
 import (
+	"crypto/rand"
+	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"image/color"
 	_ "image/png"
 	"io/ioutil"
 	"log"
-	"math/rand"
+	mrand "math/rand"
 	"path/filepath"
 	"runtime"
 	"sort"
@@ -30,10 +32,11 @@ import (
 const (
 	ScreenWidth  = 1280
 	ScreenHeight = 720
-	StateMenu    = 0
-	StateLobby   = 1
-	StateGame    = 2
-	RefFloorY    = 540
+	StateMenu        = 0
+	StateLobby       = 1
+	StateGame        = 2
+	StateLeaderboard = 3
+	RefFloorY        = 540
 )
 
 var (
@@ -66,10 +69,18 @@ type Game struct {
 
 	// Spieler Info
 	playerName  string
+	playerCode  string // Eindeutiger UUID für Leaderboard
 	roomID      string
-	activeField string // "name" oder "room"
+	activeField string // "name" oder "room" oder "teamname"
 	gameMode    string // "solo" oder "coop"
 	isHost      bool
+	teamName    string // Team-Name für Coop beim Game Over
+
+	// Leaderboard
+	leaderboard      []game.LeaderboardEntry
+	scoreSubmitted   bool
+	showLeaderboard  bool
+	leaderboardMutex sync.Mutex
 
 	// Lobby State (für Change Detection)
 	lastPlayerCount int
@@ -84,6 +95,7 @@ type Game struct {
 	inputSequence   uint32                // Sequenznummer für Inputs
 	pendingInputs   map[uint32]InputState // Noch nicht bestätigte Inputs
 	lastServerSeq   uint32                // Letzte vom Server bestätigte Sequenz
+	predictionMutex sync.Mutex            // Mutex für pendingInputs
 
 	// Kamera
 	camX float64
@@ -107,11 +119,13 @@ func NewGame() *Game {
 		activeField:   "name",
 		gameMode:      "",
 		pendingInputs: make(map[uint32]InputState),
+		leaderboard:   make([]game.LeaderboardEntry, 0),
 
 		joyBaseX: 150, joyBaseY: ScreenHeight - 150,
 		joyStickX: 150, joyStickY: ScreenHeight - 150,
 	}
 	g.loadAssets()
+	g.loadOrCreatePlayerCode()
 	return g
 }
 
@@ -166,6 +180,48 @@ func (g *Game) loadAssets() {
 
 // --- UPDATE ---
 func (g *Game) Update() error {
+	// Game Over Handling
+	if g.appState == StateGame && g.gameState.Status == "GAMEOVER" {
+		// Back Button (oben links) - Touch Support
+		backBtnW, backBtnH := 120, 40
+		backBtnX, backBtnY := 20, 20
+		if isHit(backBtnX, backBtnY, backBtnW, backBtnH) {
+			g.appState = StateMenu
+			g.connected = false
+			g.scoreSubmitted = false
+			g.teamName = ""
+			g.activeField = ""
+			if g.conn != nil {
+				g.conn.Drain()
+				g.conn.Close()
+			}
+			g.gameState = game.GameState{Players: make(map[string]game.PlayerState)}
+			log.Println("🔙 Zurück zum Menü (Back Button)")
+			return nil
+		}
+
+		// ESC zurück zum Menü
+		if inpututil.IsKeyJustPressed(ebiten.KeyEscape) {
+			g.appState = StateMenu
+			g.connected = false
+			g.scoreSubmitted = false
+			g.teamName = ""
+			g.activeField = ""
+			if g.conn != nil {
+				g.conn.Drain()
+				g.conn.Close()
+			}
+			g.gameState = game.GameState{Players: make(map[string]game.PlayerState)}
+			log.Println("🔙 Zurück zum Menü (ESC)")
+			return nil
+		}
+
+		// Host: Team-Name Eingabe
+		if g.isHost {
+			g.handleGameOverInput()
+		}
+	}
+
 	switch g.appState {
 	case StateMenu:
 		g.updateMenu()
@@ -173,6 +229,8 @@ func (g *Game) Update() error {
 		g.updateLobby()
 	case StateGame:
 		g.UpdateGame()
+	case StateLeaderboard:
+		g.updateLeaderboard()
 	}
 	return nil
 }
@@ -180,6 +238,18 @@ func (g *Game) Update() error {
 func (g *Game) updateMenu() {
 	g.handleMenuInput()
 
+	// Leaderboard Button
+	lbBtnW, lbBtnH := 200, 50
+	lbBtnX := ScreenWidth - lbBtnW - 20
+	lbBtnY := 20
+	if isHit(lbBtnX, lbBtnY, lbBtnW, lbBtnH) {
+		g.appState = StateLeaderboard
+		if !g.connected {
+			go g.connectForLeaderboard()
+		}
+		return
+	}
+
 	// Name-Feld
 	fieldW, fieldH := 250, 40
 	nameX := ScreenWidth/2 - fieldW/2
@@ -286,6 +356,8 @@ func (g *Game) Draw(screen *ebiten.Image) {
 		g.DrawLobby(screen)
 	case StateGame:
 		g.DrawGame(screen)
+	case StateLeaderboard:
+		g.DrawLeaderboard(screen)
 	}
 }
 
@@ -364,6 +436,14 @@ func (g *Game) DrawMenu(screen *ebiten.Image) {
 		text.Draw(screen, "Join with Code", basicfont.Face7x13, joinBtnX+90, joinBtnY+30, ColText)
 	}
 
+	// Leaderboard Button
+	lbBtnW := 200
+	lbBtnX := ScreenWidth - lbBtnW - 20
+	lbBtnY := 20
+	vector.DrawFilledRect(screen, float32(lbBtnX), float32(lbBtnY), float32(lbBtnW), 50, ColBtnNormal, false)
+	vector.StrokeRect(screen, float32(lbBtnX), float32(lbBtnY), float32(lbBtnW), 50, 2, color.RGBA{255, 215, 0, 255}, false)
+	text.Draw(screen, "🏆 LEADERBOARD", basicfont.Face7x13, lbBtnX+35, lbBtnY+30, color.RGBA{255, 215, 0, 255})
+
 	text.Draw(screen, "WASD / Arrows - SPACE to Jump", basicfont.Face7x13, ScreenWidth/2-100, ScreenHeight-30, color.Gray{150})
 }
 
@@ -517,12 +597,56 @@ func (g *Game) handleMenuInput() {
 	}
 }
 
+func (g *Game) handleGameOverInput() {
+	// Team-Name Feld
+	fieldW := 300
+	fieldX := ScreenWidth/2 - fieldW/2
+	fieldY := ScreenHeight - 140
+
+	// Click auf Team-Name Feld?
+	if isHit(fieldX, fieldY, fieldW, 40) {
+		g.activeField = "teamname"
+		return
+	}
+
+	// Submit Button
+	submitBtnW := 200
+	submitBtnX := ScreenWidth/2 - submitBtnW/2
+	submitBtnY := ScreenHeight - 85
+
+	if isHit(submitBtnX, submitBtnY, submitBtnW, 40) {
+		if g.teamName != "" {
+			g.submitTeamScore()
+		}
+		return
+	}
+
+	// Tastatur-Eingabe für Team-Name
+	if g.activeField == "teamname" {
+		if inpututil.IsKeyJustPressed(ebiten.KeyEnter) {
+			if g.teamName != "" {
+				g.submitTeamScore()
+			}
+			g.activeField = ""
+		} else if inpututil.IsKeyJustPressed(ebiten.KeyBackspace) {
+			if len(g.teamName) > 0 {
+				g.teamName = g.teamName[:len(g.teamName)-1]
+			}
+		} else {
+			chars := string(ebiten.InputChars())
+			if len(g.teamName) < 30 { // Max 30 Zeichen
+				g.teamName += chars
+			}
+		}
+	}
+}
+
 func generateRoomCode() string {
-	rand.Seed(time.Now().UnixNano())
+	mrand.Seed(time.Now().UnixNano())
 	chars := "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
 	code := make([]byte, 6)
 	for i := range code {
-		code[i] = chars[rand.Intn(len(chars))]
+		code[i] = chars[mrand.Intn(len(chars))]
 	}
 	return string(code)
 }
@@ -672,6 +796,214 @@ func (g *Game) getMyPlayerID() string {
 	return g.playerName
 }
 
+// loadOrCreatePlayerCode lädt oder erstellt einen eindeutigen Spieler-Code
+func (g *Game) loadOrCreatePlayerCode() {
+	const codeFile = "player_code.txt"
+
+	// Versuche zu laden
+	data, err := ioutil.ReadFile(codeFile)
+	if err == nil {
+		g.playerCode = strings.TrimSpace(string(data))
+		log.Printf("🔑 Player-Code geladen: %s", g.playerCode)
+		return
+	}
+
+	// Erstelle neuen Code (16 Byte = 32 Hex-Zeichen)
+	bytes := make([]byte, 16)
+	if _, err := rand.Read(bytes); err != nil {
+		log.Fatal("Fehler beim Generieren des Player-Codes:", err)
+	}
+	g.playerCode = hex.EncodeToString(bytes)
+
+	// Speichern
+	if err := ioutil.WriteFile(codeFile, []byte(g.playerCode), 0644); err != nil {
+		log.Printf("⚠️ Konnte Player-Code nicht speichern: %v", err)
+	} else {
+		log.Printf("🆕 Neuer Player-Code erstellt: %s", g.playerCode)
+	}
+}
+
+// submitScore sendet den individuellen Score an den Server (für Solo-Mode)
+func (g *Game) submitScore() {
+	if g.scoreSubmitted || !g.connected {
+		return
+	}
+
+	// Finde eigenen Score
+	myScore := 0
+	for _, p := range g.gameState.Players {
+		if p.Name == g.playerName {
+			myScore = p.Score
+			break
+		}
+	}
+
+	submission := game.ScoreSubmission{
+		PlayerName: g.playerName,
+		PlayerCode: g.playerCode,
+		Score:      myScore,
+	}
+
+	g.conn.Publish("score.submit", submission)
+	g.scoreSubmitted = true
+	log.Printf("📊 Score eingereicht: %d Punkte", myScore)
+
+	// Leaderboard abrufen
+	g.requestLeaderboard()
+}
+
+// submitTeamScore sendet den Team-Score an den Server (für Coop-Mode)
+func (g *Game) submitTeamScore() {
+	if g.scoreSubmitted || !g.connected || g.teamName == "" {
+		return
+	}
+
+	// Berechne Team-Score (Summe aller Spieler-Scores)
+	teamScore := 0
+	for _, p := range g.gameState.Players {
+		teamScore += p.Score
+	}
+
+	submission := game.ScoreSubmission{
+		PlayerName: g.teamName, // Team-Name statt Spieler-Name
+		PlayerCode: g.playerCode,
+		Score:      teamScore,
+	}
+
+	g.conn.Publish("score.submit", submission)
+	g.scoreSubmitted = true
+	g.activeField = ""
+	log.Printf("📊 Team-Score eingereicht: %s - %d Punkte", g.teamName, teamScore)
+
+	// Leaderboard abrufen
+	g.requestLeaderboard()
+}
+
+// requestLeaderboard fordert das Leaderboard vom Server an (asynchron)
+func (g *Game) requestLeaderboard() {
+	if !g.connected {
+		return
+	}
+
+	go func() {
+		inbox := g.conn.Conn.NewRespInbox()
+		sub, err := g.conn.Subscribe(inbox, func(entries *[]game.LeaderboardEntry) {
+			g.leaderboardMutex.Lock()
+			g.leaderboard = *entries
+			g.leaderboardMutex.Unlock()
+			log.Printf("📊 Leaderboard empfangen: %d Einträge", len(*entries))
+		})
+
+		if err != nil {
+			log.Printf("⚠️ Fehler beim Leaderboard-Request: %v", err)
+			return
+		}
+
+		// Request senden
+		g.conn.PublishRequest("leaderboard.get", inbox, &struct{}{})
+
+		// Warte kurz auf Antwort, dann unsubscribe
+		time.Sleep(100 * time.Millisecond)
+		sub.Unsubscribe()
+	}()
+}
+
+func (g *Game) connectForLeaderboard() {
+	serverURL := "nats://localhost:4222"
+	nc, err := nats.Connect(serverURL)
+	if err != nil {
+		log.Printf("❌ NATS Verbindung fehlgeschlagen: %v", err)
+		return
+	}
+
+	g.conn, err = nats.NewEncodedConn(nc, nats.JSON_ENCODER)
+	if err != nil {
+		log.Printf("❌ EncodedConn Fehler: %v", err)
+		return
+	}
+
+	g.connected = true
+	log.Println("✅ Verbunden für Leaderboard")
+
+	// Leaderboard abrufen
+	g.requestLeaderboard()
+}
+
+func (g *Game) updateLeaderboard() {
+	// Back Button (oben links) - Touch Support
+	backBtnW, backBtnH := 120, 40
+	backBtnX, backBtnY := 20, 20
+	if isHit(backBtnX, backBtnY, backBtnW, backBtnH) {
+		g.appState = StateMenu
+		return
+	}
+
+	// ESC = zurück zum Menü
+	if inpututil.IsKeyJustPressed(ebiten.KeyEscape) {
+		g.appState = StateMenu
+		return
+	}
+}
+
+func (g *Game) DrawLeaderboard(screen *ebiten.Image) {
+	screen.Fill(color.RGBA{20, 20, 30, 255})
+
+	// Titel
+	text.Draw(screen, "=== TOP 10 LEADERBOARD ===", basicfont.Face7x13, ScreenWidth/2-100, 80, color.RGBA{255, 215, 0, 255})
+
+	// Leaderboard abrufen wenn leer
+	g.leaderboardMutex.Lock()
+	if len(g.leaderboard) == 0 && g.connected {
+		g.leaderboardMutex.Unlock()
+		g.requestLeaderboard()
+		g.leaderboardMutex.Lock()
+	}
+
+	y := 150
+	if len(g.leaderboard) == 0 {
+		text.Draw(screen, "Noch keine Einträge...", basicfont.Face7x13, ScreenWidth/2-80, y, color.Gray{150})
+	} else {
+		for i, entry := range g.leaderboard {
+			if i >= 10 {
+				break
+			}
+
+			// Eigenen Eintrag markieren
+			var col color.Color = color.White
+			marker := ""
+			if entry.PlayerCode == g.playerCode {
+				col = color.RGBA{0, 255, 0, 255}
+				marker = " ← DU"
+			}
+
+			// Medaillen
+			medal := ""
+			if i == 0 {
+				medal = "🥇 "
+			} else if i == 1 {
+				medal = "🥈 "
+			} else if i == 2 {
+				medal = "🥉 "
+			}
+
+			leaderMsg := fmt.Sprintf("%d. %s%s: %d pts%s", i+1, medal, entry.PlayerName, entry.Score, marker)
+			text.Draw(screen, leaderMsg, basicfont.Face7x13, ScreenWidth/2-150, y, col)
+			y += 30
+		}
+	}
+	g.leaderboardMutex.Unlock()
+
+	// Back Button (oben links)
+	backBtnW, backBtnH := 120, 40
+	backBtnX, backBtnY := 20, 20
+	vector.DrawFilledRect(screen, float32(backBtnX), float32(backBtnY), float32(backBtnW), float32(backBtnH), color.RGBA{150, 0, 0, 255}, false)
+	vector.StrokeRect(screen, float32(backBtnX), float32(backBtnY), float32(backBtnW), float32(backBtnH), 2, color.White, false)
+	text.Draw(screen, "< ZURÜCK", basicfont.Face7x13, backBtnX+20, backBtnY+25, color.White)
+
+	// Zurück-Button Anleitung
+	text.Draw(screen, "ESC oder ZURÜCK-Button = Menü", basicfont.Face7x13, ScreenWidth/2-110, ScreenHeight-40, color.Gray{150})
+}
+
 func main() {
 	ebiten.SetWindowSize(ScreenWidth, ScreenHeight)
 	ebiten.SetWindowTitle("Escape From Teacher")
diff --git a/cmd/client/prediction.go b/cmd/client/prediction.go
index 3bff564..2d17231 100644
--- a/cmd/client/prediction.go
+++ b/cmd/client/prediction.go
@@ -50,6 +50,9 @@ func (g *Game) ApplyInput(input InputState) {
 
 // ReconcileWithServer gleicht lokale Prediction mit Server-State ab
 func (g *Game) ReconcileWithServer(serverState game.PlayerState) {
+	g.predictionMutex.Lock()
+	defer g.predictionMutex.Unlock()
+
 	// Server-bestätigte Sequenz
 	g.lastServerSeq = serverState.LastInputSeq
 
diff --git a/cmd/server/main.go b/cmd/server/main.go
index 27aa20f..caa2818 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -28,6 +28,11 @@ func main() {
 	globalWorld = game.NewWorld()
 	loadServerAssets(globalWorld)
 
+	// 1b. Redis-Leaderboard initialisieren
+	if err := server.InitLeaderboard("localhost:6379"); err != nil {
+		log.Fatal("❌ Konnte nicht zu Redis verbinden: ", err)
+	}
+
 	// 2. NATS VERBINDUNG
 	natsURL := "nats://localhost:4222"
 	nc, err := nats.Connect(natsURL)
@@ -99,6 +104,22 @@ func main() {
 		}
 	})
 
+	// 5. HANDLER: SCORE SUBMISSION
+	_, _ = ec.Subscribe("score.submit", func(submission *game.ScoreSubmission) {
+		log.Printf("📊 Score-Submission: %s (%s) mit %d Punkten", submission.PlayerName, submission.PlayerCode, submission.Score)
+		added := server.GlobalLeaderboard.AddScore(submission.PlayerName, submission.PlayerCode, submission.Score)
+		if added {
+			log.Printf("✅ Score akzeptiert für %s", submission.PlayerName)
+		}
+	})
+
+	// 6. HANDLER: LEADERBOARD REQUEST
+	_, _ = ec.Subscribe("leaderboard.get", func(subject, reply string, _ *struct{}) {
+		top10 := server.GlobalLeaderboard.GetTop10()
+		log.Printf("📊 Leaderboard-Request beantwortet: %d Einträge", len(top10))
+		ec.Publish(reply, top10)
+	})
+
 	log.Println("✅ Server bereit. Warte auf Spieler...")
 
 	// Block forever
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..f20612e
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,15 @@
+module git.zb-server.de/ZB-Server/EscapeFromTeacher
+
+go 1.24.0
+
+require (
+	github.com/hajimehoshi/ebiten/v2 v2.9.6
+	github.com/nats-io/nats.go v1.48.0
+	github.com/redis/go-redis/v9 v9.17.2
+	golang.org/x/image v0.31.0
+)
+
+require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..bd63e53
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,9 @@
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/hajimehoshi/ebiten/v2 v2.9.6/go.mod h1:DAt4tnkYYpCvu3x9i1X/nK/vOruNXIlYq/tBXxnhrXM=
+github.com/nats-io/nats.go v1.48.0/go.mod h1:iRWIPokVIFbVijxuMQq4y9ttaBTMe0SFdlZfMDd+33g=
+github.com/redis/go-redis/v9 v9.17.2 h1:P2EGsA4qVIM3Pp+aPocCJ7DguDHhqrXNhVcEp4ViluI=
+github.com/redis/go-redis/v9 v9.17.2/go.mod h1:u410H11HMLoB+TP67dz8rL9s6QW2j76l0//kSOd3370=
+golang.org/x/image v0.31.0/go.mod h1:R9ec5Lcp96v9FTF+ajwaH3uGxPH4fKfHHAVbUILxghA=
diff --git a/pkg/game/data.go b/pkg/game/data.go
index c943bae..15dc9fd 100644
--- a/pkg/game/data.go
+++ b/pkg/game/data.go
@@ -91,3 +91,18 @@ type GameState struct {
 	ScrollX        float64                `json:"scroll_x"`
 	CollectedCoins map[string]bool        `json:"collected_coins"` // Welche Coins wurden eingesammelt (Key: ChunkID_ObjectIndex)
 }
+
+// Leaderboard-Eintrag
+type LeaderboardEntry struct {
+	PlayerName string `json:"player_name"`
+	PlayerCode string `json:"player_code"` // Eindeutiger Code für Verifikation
+	Score      int    `json:"score"`
+	Timestamp  int64  `json:"timestamp"` // Unix-Timestamp
+}
+
+// Score-Submission vom Client an Server
+type ScoreSubmission struct {
+	PlayerName string `json:"player_name"`
+	PlayerCode string `json:"player_code"`
+	Score      int    `json:"score"`
+}
diff --git a/pkg/game/world.go b/pkg/game/world.go
index 0c0ba00..d74d6f0 100644
--- a/pkg/game/world.go
+++ b/pkg/game/world.go
@@ -72,26 +72,31 @@ func (w *World) GenerateColliders(activeChunks []ActiveChunk) []Collider {
 	for _, ac := range activeChunks {
 		chunk, exists := w.ChunkLibrary[ac.ChunkID]
 		if !exists {
+			fmt.Printf("⚠️ Chunk '%s' nicht in Library!\n", ac.ChunkID)
 			continue
 		}
 
 		for _, obj := range chunk.Objects {
 			def, ok := w.Manifest.Assets[obj.AssetID]
 			if !ok {
+				fmt.Printf("⚠️ Asset '%s' nicht in Manifest!\n", obj.AssetID)
 				continue
 			}
 
 			if def.Type == "obstacle" || def.Type == "platform" {
 				c := Collider{
 					Rect: Rect{
-						OffsetX: ac.X + obj.X + def.Hitbox.OffsetX,
-						OffsetY: obj.Y + def.Hitbox.OffsetY,
+						OffsetX: ac.X + obj.X + def.DrawOffX + def.Hitbox.OffsetX,
+						OffsetY: obj.Y + def.DrawOffY + def.Hitbox.OffsetY,
 						W:       def.Hitbox.W,
 						H:       def.Hitbox.H,
 					},
 					Type: def.Type,
 				}
 				list = append(list, c)
+				fmt.Printf("✅ Collider generiert: Type=%s, Asset=%s, Pos=(%.0f,%.0f), DrawOff=(%.0f,%.0f), HitboxOff=(%.0f,%.0f)\n",
+					def.Type, obj.AssetID, c.Rect.OffsetX, c.Rect.OffsetY,
+					def.DrawOffX, def.DrawOffY, def.Hitbox.OffsetX, def.Hitbox.OffsetY)
 			}
 		}
 	}
diff --git a/pkg/go.mod b/pkg/go.mod
index c0d4810..f267f20 100644
--- a/pkg/go.mod
+++ b/pkg/go.mod
@@ -2,9 +2,15 @@ module git.zb-server.de/ZB-Server/EscapeFromTeacher/pkg
 
 go 1.25.5
 
-require github.com/nats-io/nats.go v1.47.0
+require (
+	github.com/gorilla/websocket v1.5.3
+	github.com/nats-io/nats.go v1.47.0
+	github.com/redis/go-redis/v9 v9.17.2
+)
 
 require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/klauspost/compress v1.18.0 // indirect
 	github.com/nats-io/nkeys v0.4.11 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
diff --git a/pkg/go.sum b/pkg/go.sum
index 76dd281..e56aef4 100644
--- a/pkg/go.sum
+++ b/pkg/go.sum
@@ -1,3 +1,13 @@
+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
+github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
+github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/nats-io/nats.go v1.47.0 h1:YQdADw6J/UfGUd2Oy6tn4Hq6YHxCaJrVKayxxFqYrgM=
@@ -6,6 +16,8 @@ github.com/nats-io/nkeys v0.4.11 h1:q44qGV008kYd9W1b1nEBkNzvnWxtRSQ7A8BoqRrcfa0=
 github.com/nats-io/nkeys v0.4.11/go.mod h1:szDimtgmfOi9n25JpfIdGw12tZFYXqhGxjhVxsatHVE=
 github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
 github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
+github.com/redis/go-redis/v9 v9.17.2 h1:P2EGsA4qVIM3Pp+aPocCJ7DguDHhqrXNhVcEp4ViluI=
+github.com/redis/go-redis/v9 v9.17.2/go.mod h1:u410H11HMLoB+TP67dz8rL9s6QW2j76l0//kSOd3370=
 golang.org/x/crypto v0.37.0 h1:kJNSjF/Xp7kU0iB2Z+9viTPMW4EqqsrywMXLJOOsXSE=
 golang.org/x/crypto v0.37.0/go.mod h1:vg+k43peMZ0pUMhYmVAWysMK35e6ioLh3wB8ZCAfbVc=
 golang.org/x/sys v0.32.0 h1:s77OFDvIQeibCmezSnk/q6iAfkdiQaJi4VzroCFrN20=
diff --git a/pkg/server/leaderboard.go b/pkg/server/leaderboard.go
new file mode 100644
index 0000000..ee46fea
--- /dev/null
+++ b/pkg/server/leaderboard.go
@@ -0,0 +1,97 @@
+package server
+
+import (
+	"context"
+	"encoding/json"
+	"log"
+	"time"
+
+	"git.zb-server.de/ZB-Server/EscapeFromTeacher/pkg/game"
+	"github.com/redis/go-redis/v9"
+)
+
+type Leaderboard struct {
+	rdb *redis.Client
+	ctx context.Context
+}
+
+var GlobalLeaderboard *Leaderboard
+
+const leaderboardKey = "leaderboard:top"
+
+func InitLeaderboard(redisAddr string) error {
+	rdb := redis.NewClient(&redis.Options{
+		Addr: redisAddr,
+		DB:   0,
+	})
+
+	ctx := context.Background()
+	if err := rdb.Ping(ctx).Err(); err != nil {
+		return err
+	}
+
+	GlobalLeaderboard = &Leaderboard{
+		rdb: rdb,
+		ctx: ctx,
+	}
+
+	log.Println("📊 Redis-Leaderboard verbunden")
+	return nil
+}
+
+func (lb *Leaderboard) AddScore(name, code string, score int) bool {
+	// Prüfe ob Spieler bereits existiert
+	existingScoreStr, err := lb.rdb.HGet(lb.ctx, "leaderboard:players", code).Result()
+	if err == nil {
+		var existingScore int
+		json.Unmarshal([]byte(existingScoreStr), &existingScore)
+		if score <= existingScore {
+			return false // Neuer Score nicht besser
+		}
+	}
+
+	// Score speichern
+	entry := game.LeaderboardEntry{
+		PlayerName: name,
+		PlayerCode: code,
+		Score:      score,
+		Timestamp:  time.Now().Unix(),
+	}
+
+	data, _ := json.Marshal(entry)
+	lb.rdb.HSet(lb.ctx, "leaderboard:players", code, string(data))
+
+	// In Sorted Set mit Score als Wert
+	lb.rdb.ZAdd(lb.ctx, leaderboardKey, redis.Z{
+		Score:  float64(score),
+		Member: code,
+	})
+
+	log.Printf("🏆 Leaderboard Update: %s mit %d Punkten", name, score)
+	return true
+}
+
+func (lb *Leaderboard) GetTop10() []game.LeaderboardEntry {
+	// Hole Top 10 (höchste Scores zuerst)
+	codes, err := lb.rdb.ZRevRange(lb.ctx, leaderboardKey, 0, 9).Result()
+	if err != nil {
+		log.Printf("⚠️ Fehler beim Abrufen des Leaderboards: %v", err)
+		return []game.LeaderboardEntry{}
+	}
+
+	entries := make([]game.LeaderboardEntry, 0)
+	for _, code := range codes {
+		dataStr, err := lb.rdb.HGet(lb.ctx, "leaderboard:players", code).Result()
+		if err != nil {
+			continue
+		}
+
+		var entry game.LeaderboardEntry
+		if err := json.Unmarshal([]byte(dataStr), &entry); err != nil {
+			continue
+		}
+		entries = append(entries, entry)
+	}
+
+	return entries
+}
diff --git a/pkg/server/room.go b/pkg/server/room.go
index 5f03be6..8dc1166 100644
--- a/pkg/server/room.go
+++ b/pkg/server/room.go
@@ -90,6 +90,18 @@ func NewRoom(id string, nc *nats.Conn, w *game.World) *Room {
 	r.SpawnNextChunk()
 	r.Colliders = r.World.GenerateColliders(r.ActiveChunks)
 
+	// DEBUG: Collider-Typen zählen
+	obstacleCount := 0
+	platformCount := 0
+	for _, c := range r.Colliders {
+		if c.Type == "obstacle" {
+			obstacleCount++
+		} else if c.Type == "platform" {
+			platformCount++
+		}
+	}
+	log.Printf("🔍 Initial Colliders: %d total (%d obstacles, %d platforms)", len(r.Colliders), obstacleCount, platformCount)
+
 	log.Printf("🎬 Raum %s gestartet mit %d Chunks", id, len(r.ActiveChunks))
 	for _, ac := range r.ActiveChunks {
 		log.Printf("   - Chunk '%s' bei X=%.0f", ac.ChunkID, ac.X)
@@ -269,13 +281,6 @@ func (r *Room) Update() {
 			continue
 		}
 
-		// Prüfe aktuelle Position auf Obstacles (falls reingesprungen)
-		currentHit, currentType := r.CheckCollision(p.X+r.pDrawOffX+r.pHitboxOffX, p.Y+r.pDrawOffY+r.pHitboxOffY, r.pW, r.pH)
-		if currentHit && currentType == "obstacle" {
-			r.KillPlayer(p)
-			continue
-		}
-
 		// X Bewegung
 		currentSpeed := config.RunSpeed + (p.InputX * 4.0)
 		nextX := p.X + currentSpeed
@@ -283,9 +288,12 @@ func (r *Room) Update() {
 		hitX, typeX := r.CheckCollision(nextX+r.pDrawOffX+r.pHitboxOffX, p.Y+r.pDrawOffY+r.pHitboxOffY, r.pW, r.pH)
 		if hitX {
 			if typeX == "obstacle" {
+				// Nicht blocken, sondern weiterlaufen und töten
+				p.X = nextX
 				r.KillPlayer(p)
 				continue
 			}
+			// Platform blockiert
 		} else {
 			p.X = nextX
 		}
@@ -313,9 +321,12 @@ func (r *Room) Update() {
 		hitY, typeY := r.CheckCollision(p.X+r.pDrawOffX+r.pHitboxOffX, nextY+r.pDrawOffY+r.pHitboxOffY, r.pW, r.pH)
 		if hitY {
 			if typeY == "obstacle" {
+				// Nicht blocken, sondern weiterlaufen und töten
+				p.Y = nextY
 				r.KillPlayer(p)
 				continue
 			}
+			// Platform blockiert
 			if p.VY > 0 {
 				p.OnGround = true
 			}
@@ -341,7 +352,21 @@ func (r *Room) Update() {
 	// 3. Map Management
 	r.UpdateMapLogic(maxX)
 
-	// 4. Host Check
+	// 4. Prüfen ob alle Spieler tot sind (GAMEOVER Check)
+	if r.Status == "RUNNING" {
+		aliveCount := 0
+		for _, p := range r.Players {
+			if p.IsAlive && !p.IsSpectator {
+				aliveCount++
+			}
+		}
+		if aliveCount == 0 && len(r.Players) > 0 {
+			log.Printf("🏁 Alle Spieler tot - Game Over!")
+			r.Status = "GAMEOVER"
+		}
+	}
+
+	// 5. Host Check
 	if _, ok := r.Players[r.HostID]; !ok && len(r.Players) > 0 {
 		for id := range r.Players {
 			r.HostID = id
@@ -354,16 +379,17 @@ func (r *Room) Update() {
 
 func (r *Room) CheckCollision(x, y, w, h float64) (bool, string) {
 	playerRect := game.Rect{OffsetX: x, OffsetY: y, W: w, H: h}
+
 	for _, c := range r.Colliders {
 		if game.CheckRectCollision(playerRect, c.Rect) {
-			if c.Type == "obstacle" {
-				log.Printf("🔴 OBSTACLE HIT! Player: (%.0f, %.0f, %.0f, %.0f), Obstacle: (%.0f, %.0f, %.0f, %.0f)",
-					playerRect.OffsetX, playerRect.OffsetY, playerRect.W, playerRect.H,
-					c.Rect.OffsetX, c.Rect.OffsetY, c.Rect.W, c.Rect.H)
-			}
+			log.Printf("🔴 COLLISION! Type=%s, Player: (%.1f, %.1f, %.1f x %.1f), Collider: (%.1f, %.1f, %.1f x %.1f)",
+				c.Type,
+				playerRect.OffsetX, playerRect.OffsetY, playerRect.W, playerRect.H,
+				c.Rect.OffsetX, c.Rect.OffsetY, c.Rect.W, c.Rect.H)
 			return true, c.Type
 		}
 	}
+
 	return false, ""
 }
 
@@ -375,7 +401,9 @@ func (r *Room) UpdateMapLogic(maxX float64) {
 	// Neue Chunks spawnen
 	if maxX > r.MapEndX-2000 {
 		r.SpawnNextChunk()
+		oldCount := len(r.Colliders)
 		r.Colliders = r.World.GenerateColliders(r.ActiveChunks)
+		log.Printf("🆕 Chunk gespawnt - Colliders: %d -> %d", oldCount, len(r.Colliders))
 	}
 
 	// Alte Chunks löschen