diff --git a/utils/nakamaManager.js b/utils/nakamaManager.js
index 9fd7484..58c0824 100644
--- a/utils/nakamaManager.js
+++ b/utils/nakamaManager.js
@@ -351,13 +351,23 @@ class NakamaManager {
             throw new Error('Missing game token in manager');
         }
 
-        console.log('[Nakama] Adding to matchmaker:', minCount, '-', maxCount);
+        // ✅ 解析 gameType 确保免费场和付费场隔离匹配
+        const gameType = this._parseGameTypeFromToken(this.gameToken);
+        if (!gameType) {
+            console.error('[Nakama] Failed to parse game_type from token');
+            throw new Error('Invalid game token: missing game_type');
+        }
+
+        console.log('[Nakama] Adding to matchmaker:', minCount, '-', maxCount, 'gameType:', gameType);
         const response = await this._send({
             matchmaker_add: {
                 min_count: minCount || 2,
                 max_count: maxCount || 2,
-                query: '+properties.game_token:*',
-                string_properties: { game_token: this.gameToken }
+                query: `+properties.game_type:${gameType}`,  // ✅ 按游戏类型过滤匹配
+                string_properties: {
+                    game_token: this.gameToken,
+                    game_type: gameType  // ✅ 传递游戏类型用于匹配
+                }
             }
         });
         console.log('[Nakama] Matchmaker ticket:', response.matchmaker_ticket);
@@ -619,6 +629,32 @@ class NakamaManager {
             return null;
         }
     }
+
+    /**
+     * 从 game_token (JWT) 中解析 game_type
+     * 用于确保免费场和付费场隔离匹配
+     */
+    _parseGameTypeFromToken(token) {
+        try {
+            const parts = token.split('.');
+            if (parts.length !== 3) return null;
+
+            const payload = parts[1];
+            // Base64 URL 解码
+            const base64 = payload.replace(/-/g, '+').replace(/_/g, '/');
+            const padded = base64 + '=='.slice(0, (4 - base64.length % 4) % 4);
+
+            // 复用现有的 base64 解码工具
+            const bytes = this._base64ToUint8Array(padded);
+            const str = this._utf8Decode(bytes);
+            const parsed = JSON.parse(str);
+
+            return parsed.game_type || null;
+        } catch (e) {
+            console.error('[Nakama] Failed to parse game_type from token:', e);
+            return null;
+        }
+    }
 }
 
 export const nakamaManager = new NakamaManager();