diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 6950a5a..172c661 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -1,4 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- IAP 결제 권한 -->
+    <uses-permission android:name="com.android.vending.BILLING" />
+
     <application
         android:label="asciineverdie"
         android:name="${applicationName}"
@@ -29,6 +32,10 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <!-- AdMob App ID -->
+        <meta-data
+            android:name="com.google.android.gms.ads.APPLICATION_ID"
+            android:value="ca-app-pub-6691216385521068~8216990571"/>
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data
diff --git a/macos/Flutter/GeneratedPluginRegistrant.swift b/macos/Flutter/GeneratedPluginRegistrant.swift
index 882be97..6ca126a 100644
--- a/macos/Flutter/GeneratedPluginRegistrant.swift
+++ b/macos/Flutter/GeneratedPluginRegistrant.swift
@@ -6,13 +6,17 @@ import FlutterMacOS
 import Foundation
 
 import audio_session
+import in_app_purchase_storekit
 import just_audio
 import path_provider_foundation
 import shared_preferences_foundation
+import webview_flutter_wkwebview
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   AudioSessionPlugin.register(with: registry.registrar(forPlugin: "AudioSessionPlugin"))
+  InAppPurchasePlugin.register(with: registry.registrar(forPlugin: "InAppPurchasePlugin"))
   JustAudioPlugin.register(with: registry.registrar(forPlugin: "JustAudioPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
+  WebViewFlutterPlugin.register(with: registry.registrar(forPlugin: "WebViewFlutterPlugin"))
 }
diff --git a/macos/Podfile.lock b/macos/Podfile.lock
index b1d17d3..b998d8f 100644
--- a/macos/Podfile.lock
+++ b/macos/Podfile.lock
@@ -2,6 +2,9 @@ PODS:
   - audio_session (0.0.1):
     - FlutterMacOS
   - FlutterMacOS (1.0.0)
+  - in_app_purchase_storekit (0.0.1):
+    - Flutter
+    - FlutterMacOS
   - just_audio (0.0.1):
     - Flutter
     - FlutterMacOS
@@ -11,32 +14,43 @@ PODS:
   - shared_preferences_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
+  - webview_flutter_wkwebview (0.0.1):
+    - Flutter
+    - FlutterMacOS
 
 DEPENDENCIES:
   - audio_session (from `Flutter/ephemeral/.symlinks/plugins/audio_session/macos`)
   - FlutterMacOS (from `Flutter/ephemeral`)
+  - in_app_purchase_storekit (from `Flutter/ephemeral/.symlinks/plugins/in_app_purchase_storekit/darwin`)
   - just_audio (from `Flutter/ephemeral/.symlinks/plugins/just_audio/darwin`)
   - path_provider_foundation (from `Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin`)
   - shared_preferences_foundation (from `Flutter/ephemeral/.symlinks/plugins/shared_preferences_foundation/darwin`)
+  - webview_flutter_wkwebview (from `Flutter/ephemeral/.symlinks/plugins/webview_flutter_wkwebview/darwin`)
 
 EXTERNAL SOURCES:
   audio_session:
     :path: Flutter/ephemeral/.symlinks/plugins/audio_session/macos
   FlutterMacOS:
     :path: Flutter/ephemeral
+  in_app_purchase_storekit:
+    :path: Flutter/ephemeral/.symlinks/plugins/in_app_purchase_storekit/darwin
   just_audio:
     :path: Flutter/ephemeral/.symlinks/plugins/just_audio/darwin
   path_provider_foundation:
     :path: Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin
   shared_preferences_foundation:
     :path: Flutter/ephemeral/.symlinks/plugins/shared_preferences_foundation/darwin
+  webview_flutter_wkwebview:
+    :path: Flutter/ephemeral/.symlinks/plugins/webview_flutter_wkwebview/darwin
 
 SPEC CHECKSUMS:
   audio_session: 728ae3823d914f809c485d390274861a24b0904e
   FlutterMacOS: d0db08ddef1a9af05a5ec4b724367152bb0500b1
+  in_app_purchase_storekit: 2342c0a5da86593124d08dd13d920f39a52b273a
   just_audio: a42c63806f16995daf5b219ae1d679deb76e6a79
   path_provider_foundation: 0b743cbb62d8e47eab856f09262bb8c1ddcfe6ba
   shared_preferences_foundation: 5086985c1d43c5ba4d5e69a4e8083a389e2909e6
+  webview_flutter_wkwebview: 29eb20d43355b48fe7d07113835b9128f84e3af4
 
 PODFILE CHECKSUM: 54d867c82ac51cbd61b565781b9fada492027009
 
diff --git a/test/features/game_session_controller_test.dart b/test/features/game_session_controller_test.dart
index f813f1a..f76e84a 100644
--- a/test/features/game_session_controller_test.dart
+++ b/test/features/game_session_controller_test.dart
@@ -80,7 +80,7 @@ void main() {
   test('loadAndStart surfaces save load errors', () {
     fakeAsync((async) {
       final saveManager = FakeSaveManager()
-        ..onLoad = (_) => (const SaveOutcome.failure('boom'), null, false);
+        ..onLoad = (_) => (const SaveOutcome.failure('boom'), null, false, null);
       final controller = buildController(async, saveManager);
 
       controller.loadAndStart(fileName: 'bad.pqf');
diff --git a/test/helpers/mock_factories.dart b/test/helpers/mock_factories.dart
index f041573..8b7edde 100644
--- a/test/helpers/mock_factories.dart
+++ b/test/helpers/mock_factories.dart
@@ -4,6 +4,7 @@ import 'package:asciineverdie/src/core/engine/reward_service.dart';
 import 'package:asciineverdie/src/core/model/combat_state.dart';
 import 'package:asciineverdie/src/core/model/combat_stats.dart';
 import 'package:asciineverdie/src/core/model/game_state.dart';
+import 'package:asciineverdie/src/core/model/monetization_state.dart';
 import 'package:asciineverdie/src/core/model/monster_combat_stats.dart';
 import 'package:asciineverdie/src/core/model/pq_config.dart';
 import 'package:asciineverdie/src/core/storage/save_manager.dart';
@@ -23,7 +24,7 @@ class FakeSaveManager implements SaveManager {
   final List<GameState> savedStates = [];
 
   /// 커스텀 로드 동작 설정
-  (SaveOutcome, GameState?, bool) Function(String?)? onLoad;
+  (SaveOutcome, GameState?, bool, MonetizationState?) Function(String?)? onLoad;
 
   /// 저장 결과 설정 (기본: 성공)
   SaveOutcome saveOutcome = const SaveOutcome.success();
@@ -33,17 +34,20 @@ class FakeSaveManager implements SaveManager {
     GameState state, {
     String? fileName,
     bool cheatsEnabled = false,
+    MonetizationState? monetization,
   }) async {
     savedStates.add(state);
     return saveOutcome;
   }
 
   @override
-  Future<(SaveOutcome, GameState?, bool)> loadState({String? fileName}) async {
+  Future<(SaveOutcome, GameState?, bool, MonetizationState?)> loadState({
+    String? fileName,
+  }) async {
     if (onLoad != null) {
       return onLoad!(fileName);
     }
-    return (const SaveOutcome.success(), null, false);
+    return (const SaveOutcome.success(), null, false, null);
   }
 
   @override