diff --git a/lib/src/core/engine/ad_service.dart b/lib/src/core/engine/ad_service.dart
index 8058323..56f1ed5 100644
--- a/lib/src/core/engine/ad_service.dart
+++ b/lib/src/core/engine/ad_service.dart
@@ -20,6 +20,9 @@ enum AdType {
 
   /// 속도업용 인터스티셜 광고 (6초)
   interstitialSpeed,
+
+  /// 복귀 보상용 리워드 광고 (30초)
+  rewardReturn,
 }
 
 /// 광고 결과
@@ -364,6 +367,7 @@ class AdService {
           overlays: SystemUiOverlay.values,
         );
         ad.dispose();
+        onComplete();
         _loadInterstitialAd();
         if (!completer.isCompleted) {
           completer.complete(AdResult.failed);
diff --git a/lib/src/core/engine/iap_service.dart b/lib/src/core/engine/iap_service.dart
index 4a9d519..61d6e4a 100644
--- a/lib/src/core/engine/iap_service.dart
+++ b/lib/src/core/engine/iap_service.dart
@@ -12,8 +12,7 @@ class IAPProductIds {
   IAPProductIds._();
 
   /// 광고 제거 상품 ID (비소모성)
-  /// TODO: Google Play Console / App Store Connect에서 상품 생성 후 ID 교체
-  static const String removeAds = 'remove_ads';
+  static const String removeAds = 'remove_ads_and';
 
   /// 모든 상품 ID 목록
   static const Set<String> all = {removeAds};
diff --git a/lib/src/core/engine/return_rewards_service.dart b/lib/src/core/engine/return_rewards_service.dart
index 7e97f87..498ae62 100644
--- a/lib/src/core/engine/return_rewards_service.dart
+++ b/lib/src/core/engine/return_rewards_service.dart
@@ -83,8 +83,13 @@ class ReturnRewardsService {
       );
     }
 
+    // 유료 유저: 오프라인 시간 2배 인정
+    final creditedHours = isPaidUser ? hoursAway * 2 : hoursAway;
+
     // 최대 시간 초과 시 최대로 제한
-    final effectiveHours = hoursAway > maxHoursAway ? maxHoursAway : hoursAway;
+    final effectiveHours = creditedHours > maxHoursAway
+        ? maxHoursAway
+        : creditedHours;
 
     // 상자 개수 계산
     final maxChests = isPaidUser ? maxChestsPaid : maxChestsFree;
@@ -163,7 +168,7 @@ class ReturnRewardsService {
     // 무료 유저는 리워드 광고 필요
     List<ChestReward> bonusRewards = [];
     final adResult = await AdService.instance.showRewardedAd(
-      adType: AdType.rewardRevive, // 복귀 보상용 리워드 광고
+      adType: AdType.rewardReturn, // 복귀 보상용 리워드 광고
       onRewarded: () {
         bonusRewards = openChests(reward.bonusChestCount, playerLevel);
       },
diff --git a/lib/src/features/game/widgets/speed_boost_button.dart b/lib/src/features/game/widgets/speed_boost_button.dart
index d200331..e870dd1 100644
--- a/lib/src/features/game/widgets/speed_boost_button.dart
+++ b/lib/src/features/game/widgets/speed_boost_button.dart
@@ -13,7 +13,7 @@ class SpeedBoostButton extends StatelessWidget {
     required this.isActive,
     required this.remainingSeconds,
     required this.onActivate,
-    this.boostMultiplier = 10,
+    this.boostMultiplier = 5,
   });
 
   /// 부스트 활성화 여부