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 GameObject:
   m_ObjectHideFlags: 0
@@ -39,6 +102,7 @@ GameObject:
   serializedVersion: 6
   m_Component:
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+  - component: {fileID: -4430287025709974354}
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   m_Name: Stage2b
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@@ -56,6 +120,7 @@ Transform:
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   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
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@@ -102,9 +167,25 @@ Transform:
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   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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   m_RootOrder: 18
diff --git a/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3a.prefab b/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3a.prefab
index f79e0412..1ea8455e 100644
--- a/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3a.prefab
+++ b/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3a.prefab
@@ -26,6 +26,7 @@ Transform:
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   m_LocalPosition: {x: 67.6, y: 2.3177245, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
   m_Children: []
   m_Father: {fileID: 2725888655826027606}
   m_RootOrder: 23
@@ -39,6 +40,7 @@ GameObject:
   serializedVersion: 6
   m_Component:
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+  - component: {fileID: -3158566811373325103}
   m_Layer: 0
   m_Name: Stage3a
   m_TagString: Untagged
@@ -56,6 +58,7 @@ Transform:
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   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
   m_Children:
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   - {fileID: 7681174380056256220}
@@ -114,9 +117,25 @@ Transform:
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   m_RootOrder: 0
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diff --git a/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3b.prefab b/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3b.prefab
index 18a8aa76..927d80fd 100644
--- a/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3b.prefab
+++ b/popcorn/Assets/MyGame/Resources/ScrollGame/Stages/Stage3b.prefab
@@ -26,10 +26,42 @@ Transform:
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   m_LocalPosition: {x: 67.6, y: 2.3177245, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
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   m_Children: []
   m_Father: {fileID: 2552418280157887158}
   m_RootOrder: 23
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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+  m_Layer: 0
+  m_Name: 10Seconds point
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
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+--- !u!4 &2412075483273799316
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+  m_PrefabAsset: {fileID: 0}
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 GameObject:
   m_ObjectHideFlags: 0
@@ -39,6 +71,7 @@ GameObject:
   serializedVersion: 6
   m_Component:
   - component: {fileID: 2552418280157887158}
+  - component: {fileID: 7601905581502890767}
   m_Layer: 0
   m_Name: Stage3b
   m_TagString: Untagged
@@ -56,6 +89,7 @@ Transform:
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   m_LocalPosition: {x: 0, y: 0, z: 0}
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+  m_ConstrainProportionsScale: 0
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@@ -114,9 +148,25 @@ Transform:
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   m_Father: {fileID: 0}
   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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+  endPos: {fileID: 2412075483273799316}
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@@ -143,10 +193,42 @@ Transform:
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   m_LocalPosition: {x: 148.91467, y: 2.3177247, z: 0}
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   m_Father: {fileID: 2552418280157887158}
   m_RootOrder: 24
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
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+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
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+--- !u!4 &1130693150276541006
+Transform:
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+  m_PrefabAsset: {fileID: 0}
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+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!1001 &118996657701961724
 PrefabInstance:
   m_ObjectHideFlags: 0
@@ -4710,18 +4792,18 @@ PrefabInstance:
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     m_RemovedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: 9909b8ac6fba54dcd98d1a129a7c8c09, type: 3}
---- !u!4 &7645641885994862055 stripped
-Transform:
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-    type: 3}
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     type: 3}
   m_PrefabInstance: {fileID: 8204243026862422364}
   m_PrefabAsset: {fileID: 0}
+--- !u!4 &7645641885994862055 stripped
+Transform:
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+  m_PrefabAsset: {fileID: 0}
 --- !u!1001 &8281111852129607500
 PrefabInstance:
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diff --git a/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_Collide.wav b/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_Collide.wav
index f2cf330e..c295e9c5 100644
Binary files a/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_Collide.wav and b/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_Collide.wav differ
diff --git a/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_FallDown.wav b/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_FallDown.wav
index b5582daf..90a9ec5c 100644
Binary files a/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_FallDown.wav and b/popcorn/Assets/MyGame/Resources/Sounds/SE/se_minigame_FallDown.wav differ
diff --git a/popcorn/Assets/MyGame/Scenes/MiniGame/MiniGame.unity b/popcorn/Assets/MyGame/Scenes/MiniGame/MiniGame.unity
index 0ebcfd37..fb677033 100644
--- a/popcorn/Assets/MyGame/Scenes/MiniGame/MiniGame.unity
+++ b/popcorn/Assets/MyGame/Scenes/MiniGame/MiniGame.unity
@@ -1889,6 +1889,10 @@ MonoBehaviour:
   readyObject: {fileID: 978217474}
   tutorialPopupObject: {fileID: 7325523898178317160}
   resultWaitTime: 1
+  easyPitch: 1
+  normalPitch: 1.05
+  hardPitch: 1.1
+  extraPitch: 1.15
   isDebug: 0
 --- !u!4 &1870432534
 Transform:
@@ -1936,13 +1940,10 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   stageTarget: {fileID: 1450368326}
-  normalTime: 15
-  hardTime: 30
-  extraTime: 45
   stageGenerateDistance: 15
   generateStageCount: 1
   beginStageOffset: 0.5
-  partsToPartsOffset: 3
+  partsToPartsOffset: 0
 --- !u!114 &1932485204
 MonoBehaviour:
   m_ObjectHideFlags: 0
diff --git a/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs b/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs
index 60347f8e..e6e87b36 100644
--- a/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/GameManager.cs
@@ -33,6 +33,10 @@ namespace MyGame.Scenes.MiniGame.Scripts
         [SerializeField] private GameObject readyObject;
         [SerializeField] private GameObject tutorialPopupObject;
         [SerializeField] private float resultWaitTime = 1f;
+        [SerializeField, ReadOnly] private float easyPitch = 1f;
+        [SerializeField] private float normalPitch = 1.1f;
+        [SerializeField] private float hardPitch = 1.2f;
+        [SerializeField] private float extraPitch = 1.4f;
 #if UNITY_EDITOR
         [SerializeField] private bool isDebug;
 #endif
@@ -76,6 +80,7 @@ namespace MyGame.Scenes.MiniGame.Scripts
             var levelPlaceList = placeList.Where(data => data.placeId == placeId).ToArray();
             var levelStageList = stageList.Where(data => data.placeId == placeId).ToArray();
 
+            // スコア保存に1つ目のstageDataIdを使用
             var stageData = levelStageList[0];
             var scoreUpdate = new Subject<Unit>().AddTo(this);
             stageSelectView.SetPlaceData(levelPlaceList);
@@ -92,20 +97,14 @@ namespace MyGame.Scenes.MiniGame.Scripts
             {
                 if (gameData.ScrollGameTodayPlayCount == 0)
                 {
-                    gameData.ScrollGameLastPlayTime = DateTime.UtcNow.ToBinary();
-                    gameData.ScrollGameTodayPlayCount++;
-                    ResetGame(levelPlaceList, stageData);
-                    menuState.Value = MenuState.Game;
+                    ResetGameWithCount(levelPlaceList, levelStageList);
                     return;
                 }
 
                 // ポップアップ ビデオ視聴表示
                 ScrollGameWatchVideoDialog.ShowDialog(() =>
                 {
-                    gameData.ScrollGameLastPlayTime = DateTime.UtcNow.ToBinary();
-                    gameData.ScrollGameTodayPlayCount++;
-                    ResetGame(levelPlaceList, stageData);
-                    menuState.Value = MenuState.Game;
+                    ResetGameWithCount(levelPlaceList, levelStageList);
                 });
             }).AddTo(this);
             scoreUpdate.OnNext(Unit.Default);
@@ -162,11 +161,13 @@ namespace MyGame.Scenes.MiniGame.Scripts
                         break;
                     case GameState.Play:
                         SoundManager.Instance.PlaySE("se_minigame_Start");
-                        stageManager.StartTimer();
                         break;
                     case GameState.Success:
-                        SoundManager.Instance.PlaySE("se_minigame_End");
-                        player.Result();
+                        SoundManager.Instance.PlaySE("se_minigame_End", () =>
+                        {
+                            SoundManager.Instance.ChangePitchBGM(1f);
+                            player.Result();
+                        });
                         break;
                     case GameState.Failure:
                         break;
@@ -200,7 +201,10 @@ namespace MyGame.Scenes.MiniGame.Scripts
                     // カメラ移動
                     cameraTransform.position = playerPosX * Vector3.right + cameraOffset;
                     bgManager.UpdatePos(playerPosX);
-                    stageManager.UpdatePos(playerPosX);
+                    if (!player.IsHit)
+                    {
+                        stageManager.UpdatePos(playerPosX);
+                    }
                 }).AddTo(this);
 
             stageManager.OnFence.Subscribe(x =>
@@ -213,6 +217,15 @@ namespace MyGame.Scenes.MiniGame.Scripts
             {
                 bgManager.SetSky(x);
                 player.SetSpeed(x);
+                var pitch = x switch
+                {
+                    ScrollGameDifficulty.Easy => easyPitch,
+                    ScrollGameDifficulty.Normal => normalPitch,
+                    ScrollGameDifficulty.Hard => hardPitch,
+                    ScrollGameDifficulty.Extra => extraPitch, 
+                    _ => throw new ArgumentOutOfRangeException(nameof(x), x, null)
+                };
+                SoundManager.Instance.ChangePitchBGM(pitch);
             }).AddTo(this);
 
             player.OnEndHit.Subscribe(_ =>
@@ -220,13 +233,6 @@ namespace MyGame.Scenes.MiniGame.Scripts
                 state.Value = GameState.Success;
             }).AddTo(this);
 
-            player.CurrentSpeedMultiply.SkipLatestValueOnSubscribe()
-                .Where(_ => state.Value == GameState.Play)
-                .Subscribe(x =>
-                {
-                    SoundManager.Instance.ChangePitchBGM(x);
-                }).AddTo(this);
-
             player.OnHitItem.Where(_ => state.Value == GameState.Play).Subscribe(x =>
             {
                 if (!x.TryGetComponent<StageItem>(out var item))
@@ -274,8 +280,8 @@ namespace MyGame.Scenes.MiniGame.Scripts
                 switch (item.ItemType)
                 {
                     case StageItem.Type.Obstacle:
-                        stageManager.StopTimer();
                         player.Hit(closestPoint);
+                        SoundManager.Instance.ChangePitchBGM(0f);
                         break;
                     case StageItem.Type.Item1:
                         break;
@@ -290,12 +296,21 @@ namespace MyGame.Scenes.MiniGame.Scripts
                 }
             }).AddTo(this);
         }
+        
+        private void ResetGameWithCount (ScrollGamePlaceData[] levelPlaceList, ScrollGameStageData[] levelStageList)
+        {
+            GameDataManager.GameData.ScrollGameLastPlayTime = DateTime.UtcNow.ToBinary();
+            GameDataManager.GameData.ScrollGameTodayPlayCount++;
+            stageManager.SetStageList(levelStageList);
+            ResetGame(levelPlaceList, levelStageList);
+            menuState.Value = MenuState.Game;
+        }
 
-        private void ResetGame(ScrollGamePlaceData[] placeList, ScrollGameStageData stageData)
+        private void ResetGame(ScrollGamePlaceData[] placeList, ScrollGameStageData[] stageDataList)
         {
             SoundManager.Instance.ChangeVolumeUniqueBGM(1f);
             // ステージ読み込み
-            stageManager.SetBeginStages(stageData.GetBeginStagePrefabs());
+            stageManager.SetBeginStages();
             player.transform.position = characterBeginPos;
             player.ResetPlayer();
             scoreCount.Value = 0;
@@ -306,7 +321,7 @@ namespace MyGame.Scenes.MiniGame.Scripts
                 .SelectMany(Observable.Timer(TimeSpan.FromSeconds(resultWaitTime)))
                 .Subscribe(x =>
                 {
-                    resultManager.ShowResult(scoreCount.Value, placeList, stageData);
+                    resultManager.ShowResult(scoreCount.Value, placeList, stageDataList[0]);
                     SoundManager.Instance.ChangePitchBGM(1f);
                 }).AddTo(gameCompositeDisposable);
 
@@ -314,10 +329,7 @@ namespace MyGame.Scenes.MiniGame.Scripts
             {
                 ScrollGameWatchVideoDialog.ShowDialog(() =>
                 {
-                    GameDataManager.GameData.ScrollGameLastPlayTime = DateTime.UtcNow.ToBinary();
-                    GameDataManager.GameData.ScrollGameTodayPlayCount++;
-                    // ステージ読み込み
-                    ResetGame(placeList, stageData);
+                    ResetGameWithCount(placeList, stageDataList);
                 });
             }).AddTo(gameCompositeDisposable);
             
diff --git a/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/StageManager.cs b/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/StageManager.cs
index 3fc76284..30ec79bf 100644
--- a/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/StageManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/MiniGame/Scripts/StageManager.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using UniRx;
 using UnityEngine;
 
@@ -8,77 +9,143 @@ namespace MyGame.Scenes.MiniGame.Scripts
     public class StageManager : MonoBehaviour
     {
         [SerializeField] private Transform stageTarget;
-        [SerializeField] private float normalTime;
-        [SerializeField] private float hardTime;
-        [SerializeField] private float extraTime;
         [SerializeField] private float stageGenerateDistance;
         [SerializeField] private int generateStageCount;
         [SerializeField] private float beginStageOffset;
         [SerializeField] private float partsToPartsOffset;
-        private Transform[] stagePrefabs;
-        private Transform[] stages;
+        private float normalTime;
+        private float hardTime;
+        private float extraTime;
+        private Transform[] stageBeginPrefabList;
+        private Transform[] stageRandomPrefabList;
+        private int beginIndex;
+        private int lengthIndex;
         private float stageEndXPos;
         private float cacheTargetXPos;
-        public IObservable<float> OnFence => fenceSubject;
+        public IObservable<float> OnFence => fenceSubject.DelayFrame(1); // 1フレーム送らせて通知
         private readonly Subject<float> fenceSubject = new();
         public IReadOnlyReactiveProperty<ScrollGameDifficulty> Difficulty => difficulty;
         private readonly ReactiveProperty<ScrollGameDifficulty> difficulty = new();
-        private IDisposable timerDisposable; 
+        private ScrollGameDifficulty generateStageDifficulty;
+        private IDisposable timerDisposable;
+        private readonly Dictionary<ScrollGameDifficulty, ScrollGameStageData> stageDataDict = new();
 
         private void Start()
         {
             fenceSubject.AddTo(this);
             difficulty.AddTo(this);
+            difficulty.SkipLatestValueOnSubscribe().Subscribe(_ =>
+            {
+                // 難易度変更時にリソース開放
+                Resources.UnloadUnusedAssets();
+                Debug.Log($"change difficulty ({difficulty.Value}) and unload resources");
+            }).AddTo(this);
         }
 
-        public void SetBeginStages(Transform[] newStages)
+
+        public void SetStageList(ScrollGameStageData[] stageDataList)
+        {
+            // ステージリストを取り込み
+            stageDataDict.Clear();
+            foreach (var stageData in stageDataList)
+            {
+                if (stageDataDict.ContainsKey(stageData.Difficulty))
+                {
+                    continue;
+                }
+                stageDataDict.Add(stageData.Difficulty, stageData);
+            }
+        }
+
+        public void SetBeginStages()
         {
             difficulty.SetValueAndForceNotify(ScrollGameDifficulty.Easy);
-            stagePrefabs = newStages;
             stageTarget.DestroyAllChildrens();
             stageEndXPos = stageTarget.position.x + beginStageOffset;
             cacheTargetXPos = stageEndXPos;
+            lengthIndex = 0;
+            beginIndex = 0;
+            generateStageDifficulty = difficulty.Value;
             GenerateStage();
         }
 
         private void GenerateStage()
         {
-            var selectIndex = UnityEngine.Random.Range(0, stagePrefabs.Length);
-            for (var i = 0; i < generateStageCount; i++)
+            // リソース読み込み
+            stageBeginPrefabList = stageDataDict[generateStageDifficulty].GetBeginStagePrefabs();
+            stageRandomPrefabList = stageDataDict[generateStageDifficulty].GetRandomStagePrefabs();
+            var stagePrefabs = Array.Empty<Transform>();
+
+            var stageCount = stageDataDict[generateStageDifficulty].length;
+            if (stageCount == 0)
             {
-                var stage = Instantiate(stagePrefabs[selectIndex], stageTarget.position + Vector3.left * 100f, Quaternion.identity, stageTarget);
-                var minPos = float.MaxValue;
-                var maxPos = float.MinValue;
-                var holePosList = new List<float>();
-                stage.FindAllChildrensComponent<StageItem>(x =>
+                stageCount = generateStageCount;
+            }
+            
+            // beginPrefabsの使用が終わったらrandomに切り替え
+            if (stageBeginPrefabList.Length > beginIndex)
+            {
+                var rangeEnd = Mathf.Min(beginIndex + stageCount, stageBeginPrefabList.Length);
+                stagePrefabs = stageBeginPrefabList[beginIndex..rangeEnd];
+                beginIndex += stagePrefabs.Length;
+            }
+            var randomStageCount = stageCount - stagePrefabs.Length;
+            if (randomStageCount > 0)
+            {
+                var prefabs = (stageRandomPrefabList?.Length ?? 0) > 0 ? stageRandomPrefabList : stageBeginPrefabList;
+                while (randomStageCount > 0)
                 {
-                    var xPos = x.transform.position.x;
-                    minPos = Mathf.Min(minPos, xPos);
-                    maxPos = Mathf.Max(maxPos, xPos);
-                    if (x.ItemType == StageItem.Type.Hole)
-                    {
-                        holePosList.Add(xPos);
-                    }
-                });
-                var xPos = stage.position.x;
-                var minDiff = minPos - xPos;
-                var maxDiff = maxPos - xPos;
-                stage.SetPositionX(stageEndXPos - minDiff);
+                    var count = Mathf.Min(randomStageCount, prefabs.Length);
+                    stagePrefabs = stagePrefabs.Concat(prefabs.RandomChoose(count)).ToArray();
+                    randomStageCount -= count;
+                }
+            }
+
+            lengthIndex += stagePrefabs.Length;
+
+            foreach (var stagePrefab in stagePrefabs)
+            {
+                var stage = Instantiate(stagePrefab, stageTarget.position + Vector3.left * 100f, Quaternion.identity, stageTarget).GetComponent<Stage>();
+                stage.transform.SetPositionX(stageEndXPos + stage.transform.position.x - stage.StartXPos);
                 // endPos更新
-                stageEndXPos = stage.position.x + maxDiff + partsToPartsOffset;
-                var cacheStageEndPos = stageEndXPos;
+                stageEndXPos = stage.EndPos + partsToPartsOffset;
+                
                 // ステージの破棄
+                var cacheStageEndPos = stageEndXPos;
                 Observable.Interval(TimeSpan.FromSeconds(.5f))
                     .First(_ => cacheStageEndPos < cacheTargetXPos)
                     .Subscribe(_ => { }, () =>
                     {
-                        Destroy(stage.gameObject);
+                        Destroy(stage.gameObject, 5f);
                     }).AddTo(stage.gameObject);
+                
                 // 落とし穴があった場合通知
-                holePosList.ToObservable().DelayFrame(1).Subscribe(x =>
+                stage.transform.FindAllChildrensComponent<StageItem>(x =>
                 {
-                    fenceSubject.OnNext(stage.position.x + x - xPos);
-                }).AddTo(this);
+                    if (x.ItemType != StageItem.Type.Hole)
+                    {
+                        return;
+                    }
+                    fenceSubject.OnNext(x.transform.position.x);
+                });
+            }
+            
+            // 指定の長さ生成を終えた場合
+            if (lengthIndex >= stageDataDict[generateStageDifficulty].length)
+            {
+                // 次回ステージ生成の難易度を変更
+                generateStageDifficulty = NextDifficulty(generateStageDifficulty);
+                lengthIndex = 0;
+                beginIndex = 0;
+                
+                // ステージを完走すると難易度変更
+                var cacheStageEndPos = stageEndXPos;
+                Observable.Interval(TimeSpan.FromSeconds(.5f))
+                    .First(_ => cacheStageEndPos < cacheTargetXPos)
+                    .Subscribe(_ => { }, () =>
+                    {
+                        difficulty.Value = NextDifficulty(difficulty.Value);
+                    }).AddTo(this);
             }
         }
 
@@ -91,30 +158,16 @@ namespace MyGame.Scenes.MiniGame.Scripts
             }
         }
 
-        public void StartTimer()
+        private static ScrollGameDifficulty NextDifficulty(ScrollGameDifficulty value)
         {
-            StopTimer();
-            timerDisposable = Observable.Timer(TimeSpan.Zero, TimeSpan.FromSeconds(1))
-                .Subscribe(x =>
-                {
-                    if (x >= extraTime)
-                    {
-                        difficulty.Value = ScrollGameDifficulty.Extra;
-                    }
-                    else if (x >= hardTime)
-                    {
-                        difficulty.Value = ScrollGameDifficulty.Hard;
-                    } 
-                    else if (x >= normalTime)
-                    {
-                        difficulty.Value = ScrollGameDifficulty.Normal;
-                    }
-                }).AddTo(this);
-        }
-
-        public void StopTimer()
-        {
-            timerDisposable?.Dispose();
+            return value switch
+            {
+                ScrollGameDifficulty.Easy => ScrollGameDifficulty.Normal,
+                ScrollGameDifficulty.Normal => ScrollGameDifficulty.Hard,
+                ScrollGameDifficulty.Hard => ScrollGameDifficulty.Extra,
+                ScrollGameDifficulty.Extra => ScrollGameDifficulty.Extra,
+                _ => throw new ArgumentOutOfRangeException(nameof(value), value, null)
+            };
         }
     }
 }
\ No newline at end of file
diff --git a/popcorn/Assets/MyGame/Scripts/SpreadsheetData.cs b/popcorn/Assets/MyGame/Scripts/SpreadsheetData.cs
index 6eff2b29..52d94329 100644
--- a/popcorn/Assets/MyGame/Scripts/SpreadsheetData.cs
+++ b/popcorn/Assets/MyGame/Scripts/SpreadsheetData.cs
@@ -562,8 +562,8 @@ public sealed class ScrollGameStageData
     public int length;
     public ScrollGameDifficulty Difficulty => (ScrollGameDifficulty)difficulty;
 
-    private string[] BeginPrefabName => beginPrefabName.Split(',');
-    private string[] RandomPrefabName => randomPrefabName.Split(',');
+    private string[] BeginPrefabName => beginPrefabName?.Split(',') ?? Array.Empty<string>();
+    private string[] RandomPrefabName => randomPrefabName?.Split(',') ?? Array.Empty<string>();
     public Transform[] GetBeginStagePrefabs()
     {
         return BeginPrefabName.Select(x => Resources.Load<Transform>($"ScrollGame/Stages/Stage{x}")).ToArray();