diff --git a/app.js b/app.js
index 43fc7e4..64b61d3 100644
--- a/app.js
+++ b/app.js
@@ -187,10 +187,6 @@
       showQR('qr-host', d);
       const raw = $('host-qr-raw');
       if (raw) raw.textContent = d;
-      const codeEl = $('host-room-code');
-      if (codeEl && mesh.roomCode) codeEl.textContent = mesh.roomCode;
-      const fullSDP = mesh.getFullSDPData ? mesh.getFullSDPData() : null;
-      if (fullSDP) showQR('qr-host-full', fullSDP);
     };
     mesh.onreadyupdate = (ready, total) => {
       $('btn-start-game').disabled = ready < total || total === 0;
@@ -268,15 +264,10 @@
       let scanned = false;
       camScan('join-camera', 'join-camera-canvas', (parsed, raw) => {
         if (scanned) return;
-        if (!parsed.id) return;
+        if (!parsed.s || !parsed.id) return;
         scanned = true;
         $('join-scan-status').textContent = 'Verbinde...';
-        if (parsed.room) {
-          $('join-room-input').value = parsed.room;
-          mesh.joinFromRoomCode(parsed.room);
-        } else if (parsed.s) {
-          mesh.joinFromQR(raw);
-        }
+        mesh.joinFromQR(raw);
       });
     } catch (e) {
       $('join-scan-status').textContent = 'Kamera nicht verfügbar';
@@ -293,16 +284,6 @@
     $('join-scan-status').textContent = 'Verbinde...';
   });
 
-  $('btn-join-room').addEventListener('click', () => {
-    const code = $('join-room-input').value.trim().toUpperCase();
-    if (!code) return;
-    if (!mesh) { show('start'); return; }
-    camStop();
-    $('join-scan-status').textContent = 'Verbinde...';
-    $('join-camera').classList.remove('active');
-    mesh.joinFromRoomCode(code);
-  });
-
   /* ─── Host: start game button (in host screen) ─── */
   $('btn-start-game').addEventListener('click', () => {
     setupGame(false);
diff --git a/index.html b/index.html
index f851d63..d2c294a 100644
--- a/index.html
+++ b/index.html
@@ -27,11 +27,10 @@
       <div class="qr-section">
         <div id="qr-host"></div>
         <p class="hint">Scannen lassen, um beizutreten</p>
-      </div>
-      <div class="room-code debug-only">
-        <span class="room-code-label">Raum-Code</span>
-        <span class="room-code-value" id="host-room-code"></span>
-        <p class="hint">Auf gleichem Rechner: Code in anderem Tab eingeben</p>
+        <details class="debug-helper debug-only" style="margin-top:8px">
+          <summary>QR-Rohdaten</summary>
+          <pre id="host-qr-raw" class="raw-data"></pre>
+        </details>
       </div>
       <div id="host-players" class="player-section">
         <h3>Spieler</h3>
@@ -42,19 +41,11 @@
         <video id="host-camera" autoplay playsinline muted></video>
         <canvas id="host-camera-canvas" hidden></canvas>
         <p id="host-scan-status"></p>
-        <details class="debug-helper debug-only">
-          <summary>QR-Rohdaten</summary>
-          <pre id="host-qr-raw" class="raw-data"></pre>
-        </details>
         <details class="debug-helper debug-only">
           <summary>Antwort manuell einfügen</summary>
           <textarea id="host-answer-paste" rows="3" placeholder="Antwort-JSON hier einfügen..."></textarea>
           <button id="btn-host-answer-paste" class="btn-small">Antwort einspielen</button>
         </details>
-        <details class="debug-helper debug-only">
-          <summary>Full-SDP-QR (für andere Geräte)</summary>
-          <div id="qr-host-full"></div>
-        </details>
       </div>
       <button id="btn-start-game" class="btn-primary" disabled>Münzwurf starten</button>
     </div>
@@ -68,10 +59,6 @@
         <video id="join-camera" autoplay playsinline muted></video>
         <canvas id="join-camera-canvas" hidden></canvas>
         <p id="join-scan-status">QR-Code scannen...</p>
-        <div class="debug-only" style="margin-top:12px">
-          <input id="join-room-input" type="text" placeholder="Raum-Code" maxlength="4" style="width:100px;padding:10px;text-align:center;font-size:1.2rem;font-family:monospace;text-transform:uppercase;background:var(--bg);border:1px solid var(--border);border-radius:6px;color:var(--text)">
-          <button id="btn-join-room" class="btn-small" style="margin-top:8px">Beitreten</button>
-        </div>
         <details class="debug-helper debug-only">
           <summary>QR manuell einfügen</summary>
           <textarea id="join-qr-paste" rows="3" placeholder="QR-JSON hier einfügen..."></textarea>
diff --git a/p2p.js b/p2p.js
index 646ea6b..0bf55ea 100644
--- a/p2p.js
+++ b/p2p.js
@@ -11,9 +11,6 @@ class MeshNet {
     this.roster = [];
     this.readyPeers = new Set();
     this._meshReadySent = false;
-    this.roomCode = null;
-    this._processedAnswers = new Set();
-    this._answerPollInterval = null;
 
     this.onpeerconnect = null;
     this.onpeerdisconnect = null;
@@ -23,59 +20,11 @@ class MeshNet {
     this.onreadyupdate = null;
   }
 
-  _generateRoomCode() {
-    return Math.random().toString(36).substring(2, 6).toUpperCase();
-  }
-
-  _startAnswerPolling() {
-    this._stopAnswerPolling();
-    this._answerPollInterval = setInterval(() => {
-      if (!this.isHost || !this.roomCode || !this._pendingPeer || this._pendingPeer.signalReceived) return;
-      const prefix = `rp2p_answer_${this.roomCode}_`;
-      for (let i = 0; i < localStorage.length; i++) {
-        const key = localStorage.key(i);
-        if (key && key.startsWith(prefix) && !this._processedAnswers.has(key)) {
-          this._processedAnswers.add(key);
-          try {
-            const raw = localStorage.getItem(key);
-            if (!raw) continue;
-            const data = JSON.parse(raw);
-            this.feedAnswer(JSON.stringify({ v: 1, id: data.id, s: data.s }));
-          } catch (err) {
-            console.error('poll answer error:', err);
-          }
-        }
-      }
-    }, 400);
-  }
-
-  _stopAnswerPolling() {
-    if (this._answerPollInterval) {
-      clearInterval(this._answerPollInterval);
-      this._answerPollInterval = null;
-    }
-  }
-
   /* ─── Host: room ─── */
 
   createRoom() {
     this.isHost = true;
-    this.roomCode = this._generateRoomCode();
-    this._processedAnswers = new Set();
-    this._cleanupStorage();
     this._createPendingPeer();
-    this._startAnswerPolling();
-  }
-
-  _cleanupStorage() {
-    const toRemove = [];
-    for (let i = 0; i < localStorage.length; i++) {
-      const key = localStorage.key(i);
-      if (key && (key.startsWith('rp2p_offer_') || key.startsWith('rp2p_answer_'))) {
-        toRemove.push(key);
-      }
-    }
-    toRemove.forEach(k => localStorage.removeItem(k));
   }
 
   _createPendingPeer() {
@@ -90,15 +39,8 @@ class MeshNet {
       if (signalSent) return;
       signalSent = true;
 
-      const sdpJson = JSON.stringify({ v: 1, id: this.myPeerId, s: signal });
-      this._fullSDPData = sdpJson;
-
-      if (this.roomCode) {
-        localStorage.setItem(`rp2p_offer_${this.roomCode}`, sdpJson);
-        this._currentQRData = JSON.stringify({ v: 1, id: this.myPeerId, room: this.roomCode });
-      } else {
-        this._currentQRData = sdpJson;
-      }
+      this._currentQRData = JSON.stringify({ v: 1, id: this.myPeerId, s: signal });
+      this._fullSDPData = this._currentQRData;
 
       if (this.onqrupdate) this.onqrupdate(this._currentQRData);
     });
@@ -175,51 +117,6 @@ class MeshNet {
     this._pendingPeer = { peer, peerId: remoteId, connected: answerSent };
   }
 
-  joinFromRoomCode(code, _retries = 10) {
-    const key = `rp2p_offer_${code.toUpperCase()}`;
-    const offerStr = localStorage.getItem(key);
-    if (!offerStr) {
-      if (_retries > 0) {
-        setTimeout(() => this.joinFromRoomCode(code, _retries - 1), 500);
-      }
-      return;
-    }
-    const offerData = JSON.parse(offerStr);
-    const remoteId = offerData.id;
-    this.hostPeerId = remoteId;
-    const offer = offerData.s;
-
-    const peer = new SimplePeer({ initiator: false, trickle: false, config: { iceServers: [] } });
-    let answerSent = false;
-
-    peer.on('signal', signal => {
-      if (answerSent) return;
-      answerSent = true;
-      const answerKey = `rp2p_answer_${code.toUpperCase()}_${this.myPeerId}`;
-      localStorage.setItem(answerKey, JSON.stringify({ id: this.myPeerId, s: signal }));
-    });
-
-    peer.on('connect', () => {
-      this.connections.set(remoteId, peer);
-      peer.send(JSON.stringify({ type: 'identity', peerId: this.myPeerId }));
-      if (this.onpeerconnect) this.onpeerconnect(remoteId);
-    });
-
-    peer.on('data', data => {
-      try {
-        const msg = JSON.parse(data.toString());
-        this._handleMessage(msg, peer);
-      } catch (e) { console.error('p2p data error:', e); }
-    });
-
-    peer.on('close', () => this._cleanupPeer(peer));
-    peer.on('error', err => console.error('p2p error:', err));
-
-    peer.signal(offer);
-    this.connections.set(remoteId, peer);
-    this._pendingPeer = { peer, peerId: remoteId, connected: answerSent };
-  }
-
   /* ─── Mesh helpers ─── */
 
   _createSimplePeer(initiator, onSignal, onConnect) {
@@ -451,7 +348,6 @@ class MeshNet {
   }
 
   destroy() {
-    this._stopAnswerPolling();
     for (const peer of this.connections.values()) {
       try { peer.destroy(); } catch (e) {}
     }
diff --git a/style.css b/style.css
index 1bcfcd7..80d98b6 100644
--- a/style.css
+++ b/style.css
@@ -382,30 +382,5 @@ h3 {
   background: var(--bg-hover);
 }
 
-/* Room code (debug mode) */
-.room-code {
-  margin: 16px 0;
-  text-align: center;
-}
-.room-code-label {
-  display: block;
-  font-size: 0.8rem;
-  color: var(--text-dim);
-  margin-bottom: 4px;
-}
-.room-code-value {
-  display: inline-block;
-  font-family: 'Courier New', monospace;
-  font-size: 2.5rem;
-  font-weight: 800;
-  letter-spacing: 6px;
-  color: var(--gold);
-  background: var(--bg-card);
-  border: 2px dashed var(--border);
-  border-radius: var(--radius);
-  padding: 8px 24px;
-  user-select: all;
-}
-
 /* Utility */
 .hidden { display: none !important; }