....

.dart_tool/extension_discovery/vs_code.json

@@ -1 +1 @@
-{"version":2,"entries":[{"package":"my_game_center","rootUri":"../","packageUri":"lib/"},{"package":"app_sudoku","rootUri":"../apps/app_sudoku/","packageUri":"lib/"},{"package":"app_spider","rootUri":"../apps/app_spider/","packageUri":"lib/"},{"package":"service_api","rootUri":"../packages/service_api/","packageUri":"lib/"},{"package":"feature_common","rootUri":"../packages/feature_common/","packageUri":"lib/"},{"package":"feature_game_sudoku","rootUri":"../packages/feature_game_sudoku/","packageUri":"lib/"},{"package":"feature_game_spider","rootUri":"../packages/feature_game_spider/","packageUri":"lib/"}]}
+{"version":2,"entries":[{"package":"my_game_center","rootUri":"../","packageUri":"lib/"},{"package":"app_sudoku","rootUri":"../apps/app_sudoku/","packageUri":"lib/"},{"package":"app_spider","rootUri":"../apps/app_spider/","packageUri":"lib/"},{"package":"app_mathquiz","rootUri":"../apps/app_mathquiz/","packageUri":"lib/"},{"package":"app_colormatch","rootUri":"../apps/app_colormatch/","packageUri":"lib/"},{"package":"app_sequence","rootUri":"../apps/app_sequence/","packageUri":"lib/"},{"package":"app_cardflip","rootUri":"../apps/app_cardflip/","packageUri":"lib/"},{"package":"app_finddiff","rootUri":"../apps/app_finddiff/","packageUri":"lib/"},{"package":"service_api","rootUri":"../packages/service_api/","packageUri":"lib/"},{"package":"feature_common","rootUri":"../packages/feature_common/","packageUri":"lib/"},{"package":"feature_game_sudoku","rootUri":"../packages/feature_game_sudoku/","packageUri":"lib/"},{"package":"feature_game_spider","rootUri":"../packages/feature_game_spider/","packageUri":"lib/"},{"package":"feature_game_colormatch","rootUri":"../packages/feature_game_colormatch/","packageUri":"lib/"},{"package":"feature_game_mathquiz","rootUri":"../packages/feature_game_mathquiz/","packageUri":"lib/"},{"package":"feature_game_sequence","rootUri":"../packages/feature_game_sequence/","packageUri":"lib/"},{"package":"feature_game_cardflip","rootUri":"../packages/feature_game_cardflip/","packageUri":"lib/"},{"package":"feature_game_finddiff","rootUri":"../packages/feature_game_finddiff/","packageUri":"lib/"}]}

packages/feature_game_finddiff/lib/controllers/finddiff_controller.dart

@@ -1,9 +1,8 @@
-// packages/feature_game_finddiff/lib/controllers/finddiff_controller.dart
-
 import 'dart:async';
 import 'dart:math';
 import 'package:flutter/material.dart';
 import '../models/finddiff_models.dart';
+import '../utils/hangul_utils.dart';
 
 class FindDiffController with ChangeNotifier {
   late FindDiffDifficulty difficulty;
@@ -13,7 +12,6 @@ class FindDiffController with ChangeNotifier {
   List<FindDiffItem> _items = [];
   List<FindDiffItem> get items => _items;
 
-  // 게임 상태
   int _currentRound = 0;
   int get currentRound => _currentRound;
   
@@ -26,21 +24,23 @@ class FindDiffController with ChangeNotifier {
   bool _isGameCompleted = false;
   bool get isGameCompleted => _isGameCompleted;
 
-  // 타이머
   Timer? _timer;
   int _remainingTime = 0;
   int get remainingTime => _remainingTime;
+  int _secondsElapsed = 0;
+  int get secondsElapsed => _secondsElapsed;
   
-  // [🔥 신규] 게임 시작 여부 (가이드 확인 후 true)
   bool _isGameStarted = false;
   bool get isGameStarted => _isGameStarted;
 
-  // [🔥 신규] 피드백 상태
   bool _showFeedback = false;
   bool get showFeedback => _showFeedback;
   bool _isLastAnswerCorrect = false;
   bool get isLastAnswerCorrect => _isLastAnswerCorrect;
 
+  FindDiffType _currentRoundType = FindDiffType.color;
+  FindDiffType get currentRoundType => _currentRoundType;
+
   final Random _random = Random();
 
   void setUserInfo(String userId, String? userName) {
@@ -54,11 +54,11 @@ class FindDiffController with ChangeNotifier {
     _incorrectCount = 0;
     _currentRound = 1;
     _isGameCompleted = false;
-    _isGameStarted = false; // 대기 상태
+    _secondsElapsed = 0;
+    _isGameStarted = false;
     _showFeedback = false;
     
     _generateLevel();
-    // [🔥 수정] 여기서 타이머를 시작하지 않음
     notifyListeners();
   }
 
@@ -66,7 +66,6 @@ class FindDiffController with ChangeNotifier {
     startNewGame(difficulty);
   }
   
-  // [🔥 신규] UI에서 호출할 타이머 시작 함수
   void startGameTimer() {
     if (_isGameStarted) return;
     _isGameStarted = true;
@@ -79,53 +78,126 @@ class FindDiffController with ChangeNotifier {
     final int totalItems = difficulty.totalItems;
     final int targetIndex = _random.nextInt(totalItems);
 
-    // 1. 기본 속성 결정
+    // 1. 문제 유형 결정
-    IconData baseIcon = Icons.circle;
+    if (difficulty.diffType == FindDiffType.mix) {
+      const List<FindDiffType> types = [
+        FindDiffType.color, FindDiffType.icon, FindDiffType.rotate, 
+        FindDiffType.category, FindDiffType.word
+      ];
+      _currentRoundType = types[_random.nextInt(types.length)];
+    } else {
+      _currentRoundType = difficulty.diffType;
+    }
+
+    // 2. 기본 속성 준비
+    IconData? baseIcon;
+    String? baseText;
+    String? targetText;
     Color baseColor = Colors.blue;
     double baseAngle = 0.0;
     
-    // 난이도별 속성 설정
+    // [🔥 핵심] 유형별 아이콘/데이터 소스 분리
-    if (difficulty.diffType == FindDiffType.icon) {
+    if (_currentRoundType == FindDiffType.category) {
+        // 카테고리 (나중에 루프에서 결정)
+        
+    } else if (_currentRoundType == FindDiffType.word) {
+      // 단어 & 오타
+      final String originalWord = FindDiffDifficulties.baseWords[
+          _random.nextInt(FindDiffDifficulties.baseWords.length)
+      ];
+      final String modifiedWord = HangulUtils.generateSimilarWord(originalWord);
+      if (_random.nextBool()) {
+        baseText = originalWord;
+        targetText = modifiedWord;
+      } else {
+        baseText = modifiedWord;
+        targetText = originalWord;
+      }
+      baseColor = Colors.black87;
+
+    } else if (_currentRoundType == FindDiffType.icon) {
+      // 모양 찾기
       final pair = FindDiffDifficulties.iconPairs[_random.nextInt(FindDiffDifficulties.iconPairs.length)];
       baseIcon = pair[0];
+      baseColor = Colors.black87;
+
+    } else if (_currentRoundType == FindDiffType.rotate) {
+      // [🔥 수정] 회전 모드: rotateIcons에서 선택 (원, 네모 등 제외)
+      baseIcon = FindDiffDifficulties.rotateIcons[_random.nextInt(FindDiffDifficulties.rotateIcons.length)];
+      baseColor = Color.fromARGB(255, _random.nextInt(200), _random.nextInt(200), _random.nextInt(200));
+      
     } else {
-      baseIcon = FindDiffDifficulties.basicIcons[_random.nextInt(FindDiffDifficulties.basicIcons.length)];
+      // 색상 모드: colorIcons에서 선택
+      baseIcon = FindDiffDifficulties.colorIcons[_random.nextInt(FindDiffDifficulties.colorIcons.length)];
       baseColor = Color.fromARGB(255, _random.nextInt(200), _random.nextInt(200), _random.nextInt(200));
     }
 
-    // 2. 아이템 생성
+    // 카테고리 모드용 리스트 준비
+    List<String> baseCatList = [];
+    List<String> targetCatList = [];
+    if (_currentRoundType == FindDiffType.category) {
+        final keys = FindDiffDifficulties.emojiCategories.keys.toList();
+        String baseKey = keys[_random.nextInt(keys.length)];
+        String targetKey;
+        do { targetKey = keys[_random.nextInt(keys.length)]; } while (baseKey == targetKey);
+        baseCatList = FindDiffDifficulties.emojiCategories[baseKey]!;
+        targetCatList = FindDiffDifficulties.emojiCategories[targetKey]!;
+    }
+
+    // 3. 아이템 배치
     for (int i = 0; i < totalItems; i++) {
       bool isTarget = (i == targetIndex);
       
-      IconData icon = baseIcon;
+      IconData? icon = baseIcon;
+      String? textContent = baseText;
       Color color = baseColor;
       double angle = baseAngle;
 
-      if (isTarget) {
+      switch (_currentRoundType) {
-        // 정답 아이템 변형
+        case FindDiffType.color:
-        switch (difficulty.diffType) {
+          if (isTarget) {
-          case FindDiffType.color:
+            // 난이도가 높거나 믹스 모드일 경우 색상 차이를 미세하게
-            int offset = (difficulty.levelIndex >= 4) ? 30 : 60; 
+            int offset = (difficulty.levelIndex >= 5) ? 30 : 60; 
-             color = Color.fromARGB(
+            color = Color.fromARGB(255, (baseColor.red + offset) % 255, (baseColor.green + offset) % 255, (baseColor.blue + offset) % 255);
-                255,
+          }
-                (baseColor.red + offset) % 255,
+          break;
-                (baseColor.green + offset) % 255,
+          
-                (baseColor.blue + offset) % 255,
+        case FindDiffType.icon:
-              );
+          if (isTarget) {
-            break;
+             final pair = FindDiffDifficulties.iconPairs.firstWhere((p) => p.contains(baseIcon));
-          case FindDiffType.icon:
+             icon = (baseIcon == pair[0]) ? pair[1] : pair[0];
-            final pair = FindDiffDifficulties.iconPairs.firstWhere((p) => p.contains(baseIcon));
+          }
-            icon = (baseIcon == pair[0]) ? pair[1] : pair[0];
+          break;
-            break;
+          
-          case FindDiffType.rotate:
+        case FindDiffType.rotate:
-            angle = 0.5; // 약 30도 회전
+          if (isTarget) angle = 0.5; // 약 30도 회전
-            break;
+          break;
-        }
+          
+        case FindDiffType.category:
+          if (isTarget) {
+            textContent = targetCatList[_random.nextInt(targetCatList.length)];
+          } else {
+            textContent = baseCatList[_random.nextInt(baseCatList.length)];
+          }
+          color = Colors.black;
+          break;
+          
+        case FindDiffType.word:
+          if (isTarget) {
+            textContent = targetText;
+          } else {
+            textContent = baseText;
+          }
+          break;
+          
+        default:
+          break;
       }
 
       _items.add(FindDiffItem(
         id: i,
         icon: icon,
+        textContent: textContent,
         color: color,
         angle: angle,
         isTarget: isTarget,
@@ -135,13 +207,13 @@ class FindDiffController with ChangeNotifier {
     _remainingTime = difficulty.timeLimitSeconds;
   }
 
+  // ... (나머지 메서드 동일) ...
   void _startTimer() {
     _timer?.cancel();
     _timer = Timer.periodic(const Duration(seconds: 1), (timer) {
+      _secondsElapsed++;
       _remainingTime--;
-
       if (_remainingTime <= 0) {
-        // 시간 초과: 오답 처리 및 다음 문제
         _handleAnswer(false);
       }
       notifyListeners();
@@ -150,12 +222,11 @@ class FindDiffController with ChangeNotifier {
 
   void onItemTapped(FindDiffItem item) {
     if (!_isGameStarted || _isGameCompleted || _showFeedback) return;
-
     _handleAnswer(item.isTarget);
   }
 
   void _handleAnswer(bool isCorrect) {
-    _timer?.cancel(); // 잠시 멈춤
+    _timer?.cancel();
     _showFeedback = true;
     _isLastAnswerCorrect = isCorrect;
 
@@ -164,18 +235,15 @@ class FindDiffController with ChangeNotifier {
     } else {
       _incorrectCount++;
     }
-    
     notifyListeners();
 
-    // 피드백 후 다음 라운드
     Future.delayed(const Duration(milliseconds: 500), () {
-      if (_score >= 10) { // [목표] 10문제 맞추면 클리어
+      if (_score >= 10) {
         _isGameCompleted = true;
       } else {
-        _currentRound++;
         _showFeedback = false;
         _generateLevel();
-        _startTimer(); // 타이머 재개
+        _startTimer();
       }
       notifyListeners();
     });

packages/feature_game_finddiff/lib/models/finddiff_models.dart

@@ -1,37 +1,43 @@
+// packages/feature_game_finddiff/lib/models/finddiff_models.dart
+
 import 'package:flutter/material.dart';
 import 'package:service_api/service_api.dart';
 
-/// 문제 유형 (무엇이 다른가?)
+/// 문제 유형
 enum FindDiffType {
-  color,  // 색상이 다름 (빨강 vs 핑크)
+  color,    // 색상이 다름
-  icon,   // 모양이 다름 (😀 vs 😃)
+  icon,     // 모양이 다름
-  rotate, // 각도가 다름 (↑ vs ↗)
+  rotate,   // 각도가 다름
+  category, // 범주가 다름
+  word,     // 글자가 다름
+  mix,      // 무작위
 }
 
 /// 개별 아이템 데이터
 class FindDiffItem {
   final int id;
-  final IconData icon;
+  final IconData? icon;
+  final String? textContent;
   final Color color;
-  final double angle; // 라디안 (0.0 ~ 2*pi)
+  final double angle; 
-  final bool isTarget; // 정답 여부 (다른 그림)
+  final bool isTarget; 
 
   FindDiffItem({
     required this.id,
-    required this.icon,
+    this.icon,
+    this.textContent,
     required this.color,
     this.angle = 0.0,
     this.isTarget = false,
   });
 }
 
-/// 난이도 정의
 class FindDiffDifficulty extends GameDifficulty {
   final int levelIndex;
-  final int rows; // 격자 행
+  final int rows; 
-  final int cols; // 격자 열
+  final int cols; 
-  final int timeLimitSeconds; // 제한 시간
+  final int timeLimitSeconds; 
-  final FindDiffType diffType; // 문제 유형
+  final FindDiffType diffType; 
 
   const FindDiffDifficulty({
     required this.levelIndex,
@@ -47,54 +53,89 @@ class FindDiffDifficulty extends GameDifficulty {
 }
 
 class FindDiffDifficulties {
-  // --- 아이콘 풀 (모양 찾기용) ---
+  // --- [🔥 확장] 모양 찾기용 아이콘 쌍 (20쌍) ---
-  // 서로 비슷하게 생긴 아이콘 쌍 (정답 vs 오답)
   static const List<List<IconData>> iconPairs = [
     [Icons.sentiment_satisfied_alt, Icons.sentiment_satisfied], // 웃음 vs 미소
     [Icons.star, Icons.star_border], // 별 vs 빈별
     [Icons.check_circle, Icons.check_circle_outline], // 체크 vs 빈체크
     [Icons.favorite, Icons.favorite_border], // 하트 vs 빈하트
     [Icons.lock, Icons.lock_open], // 잠금 vs 열림
-    [Icons.volume_up, Icons.volume_down], // 소리 큼 vs 작음
-    [Icons.battery_full, Icons.battery_alert], // 배터리 가득 vs 경고
-    [Icons.signal_wifi_4_bar, Icons.signal_wifi_off], // 와이파이 vs 꺼짐
     [Icons.brightness_5, Icons.brightness_4], // 해 vs 달
-    [Icons.directions_walk, Icons.directions_run], // 걷기 vs 뛰기
+    [Icons.mic, Icons.mic_off], // 마이크 vs 꺼짐
+    [Icons.videocam, Icons.videocam_off], // 캠 vs 꺼짐
+    [Icons.notifications, Icons.notifications_off], // 알림 vs 꺼짐
+    [Icons.wifi, Icons.wifi_off], // 와이파이 vs 꺼짐
+    // 추가된 쌍
+    [Icons.volume_up, Icons.volume_off], // 소리 vs 무음
+    [Icons.visibility, Icons.visibility_off], // 보임 vs 안보임
+    [Icons.thumb_up, Icons.thumb_down], // 따봉 vs 역따봉
+    [Icons.battery_full, Icons.battery_alert], // 배터리 vs 경고
+    [Icons.signal_cellular_4_bar, Icons.signal_cellular_off], // 신호 vs 꺼짐
+    [Icons.folder, Icons.folder_open], // 폴더 vs 열림
+    [Icons.email, Icons.drafts], // 메일 vs 편지
+    [Icons.cloud, Icons.cloud_queue], // 구름 vs 윤곽선
+    [Icons.location_on, Icons.location_off], // 위치 vs 꺼짐
+    [Icons.bookmark, Icons.bookmark_border], // 북마크 vs 빈북마크
   ];
   
-  // --- 단일 아이콘 풀 (색상/회전 찾기용) ---
+  // --- [🔥 신규] 회전 찾기용 아이콘 (방향성이 명확한 것들만) ---
-  static const List<IconData> basicIcons = [
+  static const List<IconData> rotateIcons = [
+    Icons.flight, Icons.navigation, Icons.send, Icons.north, Icons.cut,
+    Icons.vpn_key, Icons.gavel, Icons.umbrella, Icons.music_note, Icons.flash_on,
+    Icons.thumb_up, Icons.pan_tool, Icons.pets, Icons.star, Icons.favorite,
+    Icons.play_arrow, Icons.call, Icons.build, Icons.brush, Icons.edit,
+    Icons.search, Icons.flag, Icons.push_pin, Icons.local_dining, Icons.local_taxi
+  ];
+
+  // --- 색상 찾기용 아이콘 (단순한 모양) ---
+  static const List<IconData> colorIcons = [
     Icons.circle, Icons.square, Icons.star, Icons.favorite, Icons.change_history,
     Icons.hexagon, Icons.pentagon, Icons.emoji_emotions, Icons.pets, Icons.flight,
+    Icons.cloud, Icons.local_fire_department, Icons.water_drop, Icons.grass, Icons.sunny
+  ];
+
+  // --- [🔥 확장] 카테고리별 이모지 풀 (6개 카테고리) ---
+  static const Map<String, List<String>> emojiCategories = {
+    'animal': ["🐶", "🐱", "🐭", "🐹", "🐰", "🦊", "🐻", "🐼", "🐯", "🦁", "🐮", "🐷", "🐸", "🐔", "🐧", "🐦", "🐤", "🦆", "🦅", "🦉"],
+    'food': ["🍎", "🍌", "🍇", "🍓", "🍊", "🍋", "🍉", "🍔", "🍕", "🌭", "🍿", "🍩", "🍪", "🍰", "🍫", "🍬", "🍭", "🍮", "🍯", "🥐"],
+    'vehicle': ["🚗", "🚕", "🚙", "🚌", "🚎", "🏎️", "🚓", "🚑", "🚒", "✈️", "🚀", "🚁", "🚂", "🚆", "🚲", "🛵", "🏍️", "⛵", "🚤", "🛳️"],
+    'face': ["😀", "😃", "😄", "😁", "😆", "😅", "🤣", "😂", "🙂", "🙃", "😉", "😊", "😇", "🥰", "😍", "🤩", "😘", "😗", "😚", "😙"],
+    'plant': ["🌵", "🎄", "🌲", "🌳", "🌴", "🌱", "🌿", "☘️", "🍀", "🎍", "🎋", "🍃", "🍂", "🍁", "🍄", "🌾", "💐", "🌷", "🌹", "🥀"],
+    'sports': ["⚽", "🏀", "🏈", "⚾", "🥎", "🎾", "🏐", "🏉", "🎱", "🏓", "🏸", "🥅", "🥊", "🥋", "🥇", "🥈", "🥉", "🏅", "🎖", "🏆"],
+  };
+
+  // --- 유사 단어 풀 (오타 찾기용) - 기존 100개 단어 사용 (이전 코드 유지)
+  // (HangulUtils를 사용하므로 baseWords 리스트만 있으면 됩니다. 여기서는 생략하지 않고 포함합니다)
+  static const List<String> baseWords = [
+    "강아지", "고양이", "코끼리", "원숭이", "호랑이", "사자", "기린", "토끼", "다람쥐", "거북이",
+    "독수리", "갈매기", "비둘기", "참새", "까치", "펭귄", "돌고래", "고래", "상어", "문어",
+    "선풍기", "냉장고", "세탁기", "청소기", "텔레비전", "컴퓨터", "노트북", "스마트폰", "카메라", "시계",
+    "자동차", "자전거", "비행기", "지하철", "버스", "기차", "택시", "오토바이", "트럭", "배",
+    "사과", "바나나", "포도", "수박", "딸기", "오렌지", "키위", "복숭아", "자두", "레몬",
+    "짜장면", "짬뽕", "탕수육", "김치찌개", "된장찌개", "비빔밥", "불고기", "떡볶이", "김밥", "라면",
+    "하늘", "구름", "바람", "태양", "달", "별", "우주", "바다", "강", "산",
+    "학교", "병원", "은행", "우체국", "경찰서", "소방서", "도서관", "박물관", "공원", "시장",
+    "사랑", "행복", "우정", "가족", "친구", "선생님", "학생", "의사", "군인", "요리사",
+    "대한민국", "무궁화", "태극기", "애국가", "한글", "세종대왕", "이순신", "독도", "서울", "부산",
   ];
 
   // [15단계 난이도 구성]
   static final List<FindDiffDifficulty> allDifficulties = [
-    // --- Phase 1: 색상 구분 (초급) ---
+    const FindDiffDifficulty(levelIndex: 1, name: 'Lv. 1: 색상 기초 (2x2)', contextId: 'DIFF_L1_COLOR', rows: 2, cols: 2, timeLimitSeconds: 15, diffType: FindDiffType.color),
-    // 색상 차이가 뚜렷함 -> 미세함
+    const FindDiffDifficulty(levelIndex: 2, name: 'Lv. 2: 색상 심화 (3x3)', contextId: 'DIFF_L2_COLOR', rows: 3, cols: 3, timeLimitSeconds: 15, diffType: FindDiffType.color),
-    const FindDiffDifficulty(levelIndex: 1, name: 'Lv. 1: 색상 (2x2)', contextId: 'DIFF_L1_COLOR_2x2', rows: 2, cols: 2, timeLimitSeconds: 10, diffType: FindDiffType.color),
+    const FindDiffDifficulty(levelIndex: 3, name: 'Lv. 3: 모양 기초 (3x3)', contextId: 'DIFF_L3_ICON', rows: 3, cols: 3, timeLimitSeconds: 15, diffType: FindDiffType.icon),
-    const FindDiffDifficulty(levelIndex: 2, name: 'Lv. 2: 색상 (3x3)', contextId: 'DIFF_L2_COLOR_3x3', rows: 3, cols: 3, timeLimitSeconds: 10, diffType: FindDiffType.color),
+    const FindDiffDifficulty(levelIndex: 4, name: 'Lv. 4: 모양 심화 (4x4)', contextId: 'DIFF_L4_ICON', rows: 4, cols: 4, timeLimitSeconds: 15, diffType: FindDiffType.icon),
-    const FindDiffDifficulty(levelIndex: 3, name: 'Lv. 3: 색상 (4x4)', contextId: 'DIFF_L3_COLOR_4x4', rows: 4, cols: 4, timeLimitSeconds: 8, diffType: FindDiffType.color),
+    const FindDiffDifficulty(levelIndex: 5, name: 'Lv. 5: 미세 색상 (4x4)', contextId: 'DIFF_L5_COLOR_HARD', rows: 4, cols: 4, timeLimitSeconds: 15, diffType: FindDiffType.color),
-    const FindDiffDifficulty(levelIndex: 4, name: 'Lv. 4: 미세 색상 (4x4)', contextId: 'DIFF_L4_COLOR_HARD', rows: 4, cols: 4, timeLimitSeconds: 6, diffType: FindDiffType.color),
+    const FindDiffDifficulty(levelIndex: 6, name: 'Lv. 6: 회전 (4x4)', contextId: 'DIFF_L6_ROT', rows: 4, cols: 4, timeLimitSeconds: 15, diffType: FindDiffType.rotate),
-
+    const FindDiffDifficulty(levelIndex: 7, name: 'Lv. 7: 회전 (5x5)', contextId: 'DIFF_L7_ROT', rows: 5, cols: 5, timeLimitSeconds: 15, diffType: FindDiffType.rotate),
-    // --- Phase 2: 모양 구분 (중급) ---
+    const FindDiffDifficulty(levelIndex: 8, name: 'Lv. 8: 범주 판단 (4x4)', contextId: 'DIFF_L8_CAT', rows: 4, cols: 4, timeLimitSeconds: 15, diffType: FindDiffType.category),
-    // 비슷한 아이콘 찾기
+    const FindDiffDifficulty(levelIndex: 9, name: 'Lv. 9: 단어 찾기 (3x3)', contextId: 'DIFF_L9_WORD', rows: 3, cols: 3, timeLimitSeconds: 15, diffType: FindDiffType.word),
-    const FindDiffDifficulty(levelIndex: 5, name: 'Lv. 5: 모양 (3x3)', contextId: 'DIFF_L5_ICON_3x3', rows: 3, cols: 3, timeLimitSeconds: 10, diffType: FindDiffType.icon),
+    const FindDiffDifficulty(levelIndex: 10, name: 'Lv. 10: 단어 찾기 (4x4)', contextId: 'DIFF_L10_WORD', rows: 4, cols: 4, timeLimitSeconds: 15, diffType: FindDiffType.word),
-    const FindDiffDifficulty(levelIndex: 6, name: 'Lv. 6: 모양 (4x4)', contextId: 'DIFF_L6_ICON_4x4', rows: 4, cols: 4, timeLimitSeconds: 8, diffType: FindDiffType.icon),
+    const FindDiffDifficulty(levelIndex: 11, name: 'Lv. 11: 믹스 챌린지 (4x4)', contextId: 'DIFF_L11_MIX', rows: 4, cols: 4, timeLimitSeconds: 15, diffType: FindDiffType.mix),
-    const FindDiffDifficulty(levelIndex: 7, name: 'Lv. 7: 모양 (5x5)', contextId: 'DIFF_L7_ICON_5x5', rows: 5, cols: 5, timeLimitSeconds: 8, diffType: FindDiffType.icon),
+    const FindDiffDifficulty(levelIndex: 12, name: 'Lv. 12: 믹스 챌린지 (5x5)', contextId: 'DIFF_L12_MIX', rows: 5, cols: 5, timeLimitSeconds: 15, diffType: FindDiffType.mix),
-    const FindDiffDifficulty(levelIndex: 8, name: 'Lv. 8: 모양 (6x6)', contextId: 'DIFF_L8_ICON_6x6', rows: 6, cols: 6, timeLimitSeconds: 8, diffType: FindDiffType.icon),
+    const FindDiffDifficulty(levelIndex: 13, name: 'Lv. 13: 마스터 (6x6)', contextId: 'DIFF_L13_MASTER', rows: 6, cols: 6, timeLimitSeconds: 15, diffType: FindDiffType.mix),
-
+    const FindDiffDifficulty(levelIndex: 14, name: 'Lv. 14: 그랜드마스터 (7x7)', contextId: 'DIFF_L14_GM', rows: 7, cols: 7, timeLimitSeconds: 15, diffType: FindDiffType.mix),
-    // --- Phase 3: 회전 구분 (상급) ---
+    const FindDiffDifficulty(levelIndex: 15, name: 'Lv. 15: 갓모드 (8x8)', contextId: 'DIFF_L15_GOD', rows: 8, cols: 8, timeLimitSeconds: 15, diffType: FindDiffType.mix),
-    // 같은 아이콘인데 각도가 다름
-    const FindDiffDifficulty(levelIndex: 9, name: 'Lv. 9: 회전 (4x4)', contextId: 'DIFF_L9_ROT_4x4', rows: 4, cols: 4, timeLimitSeconds: 8, diffType: FindDiffType.rotate),
-    const FindDiffDifficulty(levelIndex: 10, name: 'Lv. 10: 회전 (5x5)', contextId: 'DIFF_L10_ROT_5x5', rows: 5, cols: 5, timeLimitSeconds: 7, diffType: FindDiffType.rotate),
-    const FindDiffDifficulty(levelIndex: 11, name: 'Lv. 11: 회전 (6x6)', contextId: 'DIFF_L11_ROT_6x6', rows: 6, cols: 6, timeLimitSeconds: 6, diffType: FindDiffType.rotate),
-
-    // --- Phase 4: 마스터 (대형 그리드 + 짧은 시간) ---
-    const FindDiffDifficulty(levelIndex: 12, name: 'Lv. 12: 마스터 (색상 7x7)', contextId: 'DIFF_L12_COLOR_7x7', rows: 7, cols: 7, timeLimitSeconds: 5, diffType: FindDiffType.color),
-    const FindDiffDifficulty(levelIndex: 13, name: 'Lv. 13: 마스터 (모양 7x7)', contextId: 'DIFF_L13_ICON_7x7', rows: 7, cols: 7, timeLimitSeconds: 5, diffType: FindDiffType.icon),
-    const FindDiffDifficulty(levelIndex: 14, name: 'Lv. 14: 마스터 (회전 7x7)', contextId: 'DIFF_L14_ROT_7x7', rows: 7, cols: 7, timeLimitSeconds: 5, diffType: FindDiffType.rotate),
-    const FindDiffDifficulty(levelIndex: 15, name: 'Lv. 15: 갓모드 (8x8)', contextId: 'DIFF_L15_GOD_8x8', rows: 8, cols: 8, timeLimitSeconds: 4, diffType: FindDiffType.rotate),
   ];
 
   static FindDiffDifficulty getLevel(int levelIndex) {

packages/feature_game_finddiff/lib/screens/finddiff_game_screen.dart

@@ -9,7 +9,6 @@ import '../models/finddiff_models.dart';
 
 class FindDiffGameScreen extends StatefulWidget {
   const FindDiffGameScreen({super.key});
-
   @override
   State<FindDiffGameScreen> createState() => _FindDiffGameScreenState();
 }
@@ -17,7 +16,7 @@ class FindDiffGameScreen extends StatefulWidget {
 class _FindDiffGameScreenState extends State<FindDiffGameScreen> {
   bool _isDialogShowing = false;
 
-  @override
+ @override
   void initState() {
     super.initState();
     WidgetsBinding.instance.addPostFrameCallback((_) {
@@ -27,14 +26,12 @@ class _FindDiffGameScreenState extends State<FindDiffGameScreen> {
 
   void _showGameGuide() {
     final controller = context.read<FindDiffController>();
+    String message = "나머지와 '다른 하나'를 찾으세요.";
     
-    String message = "화면에 있는 그림들 중\n나머지와 '다른 하나'를 찾으세요.";
+    if (controller.difficulty.diffType == FindDiffType.category) {
-    if (controller.difficulty.diffType == FindDiffType.color) {
+      message += "\n(성격이 다른 이모지를 찾으세요)\n예: 동물들 속에 섞인 과일";
-      message += "\n(색상이 다릅니다)";
+    } else if (controller.difficulty.diffType == FindDiffType.word) {
-    } else if (controller.difficulty.diffType == FindDiffType.icon) {
+      message += "\n(글자가 다른 단어를 찾으세요)\n예: 오타 찾기";
-      message += "\n(모양이 다릅니다)";
-    } else {
-      message += "\n(각도가 다릅니다)";
     }
 
     showDialog(
@@ -110,11 +107,10 @@ class _FindDiffGameScreenState extends State<FindDiffGameScreen> {
     if (controller.isGameCompleted && !_isDialogShowing) {
       _isDialogShowing = true;
       WidgetsBinding.instance.addPostFrameCallback((_) {
-        _showGameCompletion(controller);
+        _showGameCompletion(controller); // 정의 필요
       });
     }
 
-    // 시간 임박 경고 색상
     final Color timeColor = controller.remainingTime <= 3 ? theme.colorScheme.error : theme.colorScheme.onSurface;
 
     return Scaffold(
@@ -132,59 +128,64 @@ class _FindDiffGameScreenState extends State<FindDiffGameScreen> {
           ),
         ],
       ),
-      body: Column(
+      body: Stack( // [🔥 수정] Stack으로 감싸서 피드백 오버레이 구현
         children: [
-          // 정보 바
+          Column(
-          Padding(
+            children: [
-            padding: const EdgeInsets.all(12.0),
+              Padding(
-            child: Row(
+                padding: const EdgeInsets.all(12.0),
-              mainAxisAlignment: MainAxisAlignment.spaceAround,
+                child: Row(
-              children: [
+                  mainAxisAlignment: MainAxisAlignment.spaceAround,
-                Text("목표: ${controller.score}/10", style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold, color: theme.primaryColor)),
+                  children: [
-                Text("오답: ${controller.incorrectCount}", style: const TextStyle(fontSize: 16, color: Colors.grey)),
+                    Text("목표: ${controller.score}/10", style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold, color: theme.primaryColor)),
-              ],
+                    Text("오답: ${controller.incorrectCount}", style: const TextStyle(fontSize: 16, color: Colors.grey)),
-            ),
+                  ],
+                ),
+              ),
+              
+              // 게임 그리드
+              Expanded(
+                child: Padding(
+                  padding: const EdgeInsets.all(16.0),
+                  child: LayoutBuilder(
+                    builder: (context, constraints) {
+                      return GridView.builder(
+                        itemCount: controller.items.length,
+                        gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+                          crossAxisCount: controller.difficulty.cols,
+                          crossAxisSpacing: 8,
+                          mainAxisSpacing: 8,
+                          childAspectRatio: 1.0,
+                        ),
+                        itemBuilder: (context, index) {
+                          return _buildItem(controller.items[index], controller);
+                        },
+                      );
+                    },
+                  ),
+                ),
+              ),
+            ],
           ),
           
-          // 피드백 오버레이
+          // [🔥 신규] 피드백 오버레이 (정답/오답 표시)
           if (controller.showFeedback)
-            Expanded(
+            Container(
+              color: Colors.black.withOpacity(0.3),
               child: Center(
                 child: Icon(
                   controller.isLastAnswerCorrect ? Icons.check_circle : Icons.cancel,
-                  size: 100,
+                  size: 120,
                   color: controller.isLastAnswerCorrect ? Colors.green : theme.colorScheme.error,
                 ),
               ),
-            )
-          else
-            // 게임 그리드
-            Expanded(
-              child: Padding(
-                padding: const EdgeInsets.all(16.0),
-                child: LayoutBuilder(
-                  builder: (context, constraints) {
-                    return GridView.builder(
-                      itemCount: controller.items.length,
-                      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
-                        crossAxisCount: controller.difficulty.cols,
-                        crossAxisSpacing: 8,
-                        mainAxisSpacing: 8,
-                        childAspectRatio: 1.0,
-                      ),
-                      itemBuilder: (context, index) {
-                        return _buildItem(controller.items[index], controller);
-                      },
-                    );
-                  },
-                ),
-              ),
             ),
         ],
       ),
     );
   }
 
+  // 🔽 [🔥 핵심 수정] 아이템 빌더 (아이콘 vs 텍스트 분기)
   Widget _buildItem(FindDiffItem item, FindDiffController controller) {
     return GestureDetector(
       onTap: () => controller.onItemTapped(item),
@@ -194,13 +195,26 @@ class _FindDiffGameScreenState extends State<FindDiffGameScreen> {
           borderRadius: BorderRadius.circular(8),
           border: Border.all(color: Colors.black12),
         ),
-        child: Transform.rotate(
+        child: Center(
-          angle: item.angle,
+          child: item.textContent != null 
-          child: Icon(
+              ? FittedBox( // 단어/이모지 모드
-            item.icon,
+                  fit: BoxFit.scaleDown,
-            size: 40, // 동적 크기 조절이 필요하면 LayoutBuilder 활용 가능
+                  child: Padding(
-            color: item.color,
+                    padding: const EdgeInsets.all(4.0),
-          ),
+                    child: Text(
+                      item.textContent!,
+                      style: const TextStyle(fontSize: 32, fontWeight: FontWeight.bold),
+                    ),
+                  ),
+                )
+              : Transform.rotate( // 아이콘/회전 모드
+                  angle: item.angle,
+                  child: Icon(
+                    item.icon,
+                    size: 40,
+                    color: item.color,
+                  ),
+                ),
         ),
       ),
     );

packages/feature_game_finddiff/lib/utils/hangul_utils.dart

@@ -0,0 +1,92 @@
+import 'dart:math';
+
+class HangulUtils {
+  static const int FIRST_HANGUL = 44032; // '가'
+  static const int LAST_HANGUL = 55203; // '힣'
+
+  static const List<String> CHOSUNG_LIST = [
+    'ㄱ', 'ㄲ', 'ㄴ', 'ㄷ', 'ㄸ', 'ㄹ', 'ㅁ', 'ㅂ', 'ㅃ', 'ㅅ', 
+    'ㅆ', 'ㅇ', 'ㅈ', 'ㅉ', 'ㅊ', 'ㅋ', 'ㅌ', 'ㅍ', 'ㅎ'
+  ];
+  static const List<String> JUNGSUNG_LIST = [
+    'ㅏ', 'ㅐ', 'ㅑ', 'ㅒ', 'ㅓ', 'ㅔ', 'ㅕ', 'ㅖ', 'ㅗ', 'ㅘ', 
+    'ㅙ', 'ㅚ', 'ㅛ', 'ㅜ', 'ㅝ', 'ㅞ', 'ㅟ', 'ㅠ', 'ㅡ', 'ㅢ', 'ㅣ'
+  ];
+  static const List<String> JONGSUNG_LIST = [
+    '', 'ㄱ', 'ㄲ', 'ㄳ', 'ㄴ', 'ㄵ', 'ㄶ', 'ㄷ', 'ㄹ', 'ㄺ', 
+    'ㄻ', 'ㄼ', 'ㄽ', 'ㄾ', 'ㄿ', 'ㅀ', 'ㅁ', 'ㅂ', 'ㅄ', 'ㅅ', 
+    'ㅆ', 'ㅇ', 'ㅈ', 'ㅊ', 'ㅋ', 'ㅌ', 'ㅍ', 'ㅎ'
+  ];
+
+  static final Random _random = Random();
+
+  /// 단어를 입력받아, 랜덤한 한 글자를 아주 살짝 변형해서 반환
+  static String generateSimilarWord(String original) {
+    if (original.isEmpty) return original;
+
+    // 1. 한글인 문자들의 인덱스만 찾음
+    List<int> hangulIndices = [];
+    for (int i = 0; i < original.length; i++) {
+      int code = original.codeUnitAt(i);
+      if (code >= FIRST_HANGUL && code <= LAST_HANGUL) {
+        hangulIndices.add(i);
+      }
+    }
+
+    if (hangulIndices.isEmpty) return original; // 한글 없으면 그대로 반환
+
+    // 2. 바꿀 글자 위치 랜덤 선택
+    int targetIndex = hangulIndices[_random.nextInt(hangulIndices.length)];
+    String targetChar = original[targetIndex];
+
+    // 3. 글자 변형
+    String modifiedChar = _tweakHangul(targetChar);
+
+    // 4. 조합해서 반환
+    return original.replaceRange(targetIndex, targetIndex + 1, modifiedChar);
+  }
+
+  /// 한 글자를 분해해서 초/중/종성 중 하나를 살짝 바꿈
+  static String _tweakHangul(String char) {
+    int code = char.codeUnitAt(0) - FIRST_HANGUL;
+
+    int choIndex = code ~/ (21 * 28);
+    int jungIndex = (code % (21 * 28)) ~/ 28;
+    int jongIndex = code % 28;
+
+    // 무엇을 바꿀지 결정 (0:초성, 1:중성, 2:종성)
+    // 종성이 없는 글자('가')라면 종성을 추가하는 것도 방법이지만, 
+    // 너무 티가 나므로 초/중성 위주로 변경
+    int type = _random.nextInt(3);
+
+    if (type == 0) {
+      // [초성 변경] 비슷한 모양으로 변경 시도
+      choIndex = _getSimilarIndex(choIndex, CHOSUNG_LIST.length);
+    } else if (type == 1) {
+      // [중성 변경] (ㅏ -> ㅑ, ㅗ -> ㅜ 등)
+      jungIndex = _getSimilarIndex(jungIndex, JUNGSUNG_LIST.length);
+    } else {
+      // [종성 변경]
+      jongIndex = _getSimilarIndex(jongIndex, JONGSUNG_LIST.length);
+    }
+
+    // 재조립
+    int newCode = FIRST_HANGUL + (choIndex * 21 * 28) + (jungIndex * 28) + jongIndex;
+    return String.fromCharCode(newCode);
+  }
+
+  /// 인덱스를 랜덤하게 +-1 하거나 변경하여 "비슷한" 느낌을 줌
+  static int _getSimilarIndex(int current, int max) {
+    // 단순히 랜덤이 아니라, 현재 값과 가까운 값으로 변경하면 더 헷갈림
+    int offset = _random.nextBool() ? 1 : -1;
+    int next = current + offset;
+    
+    if (next < 0) next = 1;
+    if (next >= max) next = max - 2;
+    
+    // 만약 원래랑 같아져버리면 강제로 변경
+    if (next == current) next = (current + 1) % max;
+    
+    return next;
+  }
+}