diff --git a/backend/app/Savor22b.Tests/Action/CancelFoodActionTests.cs b/backend/app/Savor22b.Tests/Action/CancelFoodActionTests.cs
index a49b4cf9..15365852 100644
--- a/backend/app/Savor22b.Tests/Action/CancelFoodActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/CancelFoodActionTests.cs
@@ -58,6 +58,7 @@ public class CancelFoodActionTests : ActionTests
 
         RootState beforeRootState = new RootState(
             beforeInventoryState,
+            new DungeonState(),
             new VillageState(new HouseState(1, 1, 1, beforeKitchenState))
         );
 
diff --git a/backend/app/Savor22b.Tests/Action/CreateFoodActionTests.cs b/backend/app/Savor22b.Tests/Action/CreateFoodActionTests.cs
index e854770b..496cb46e 100644
--- a/backend/app/Savor22b.Tests/Action/CreateFoodActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/CreateFoodActionTests.cs
@@ -176,6 +176,7 @@ ImmutableList<int> FoodIDList
 
         RootState rootState = new RootState(
             inventoryState,
+            new DungeonState(),
             new VillageState(new HouseState(1, 1, 1, resultKitchenState))
         );
 
diff --git a/backend/app/Savor22b.Tests/Action/HarvestingSeedActionTests.cs b/backend/app/Savor22b.Tests/Action/HarvestingSeedActionTests.cs
index f95081e9..aa27e255 100644
--- a/backend/app/Savor22b.Tests/Action/HarvestingSeedActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/HarvestingSeedActionTests.cs
@@ -19,6 +19,7 @@ public void Execute_Success_Normal()
         IAccountStateDelta beforeState = new DummyState();
         RootState beforeRootState = new RootState(
             new InventoryState(),
+            new DungeonState(),
             new VillageState(
                 new HouseState(
                     1, 1, 1, new KitchenState()
@@ -70,6 +71,7 @@ public void Execute_Success_AfterRemoveWeed()
         IAccountStateDelta beforeState = new DummyState();
         RootState beforeRootState = new RootState(
             new InventoryState(),
+            new DungeonState(),
             new VillageState(
                 new HouseState(
                     1, 1, 1, new KitchenState()
diff --git a/backend/app/Savor22b.Tests/Action/InstallKitchenEquipmentActionTests.cs b/backend/app/Savor22b.Tests/Action/InstallKitchenEquipmentActionTests.cs
index d46b4090..c2a0fb24 100644
--- a/backend/app/Savor22b.Tests/Action/InstallKitchenEquipmentActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/InstallKitchenEquipmentActionTests.cs
@@ -30,6 +30,7 @@ public void Execute_Success_NormalCase(int spaceNumber)
                 ImmutableList<KitchenEquipmentState>.Empty.Add(new KitchenEquipmentState(Guid.NewGuid(), 1, 1)),
                 ImmutableList<ItemState>.Empty
             ),
+            new DungeonState(),
             new VillageState(
                 new HouseState(
                     1, 1, 1, new KitchenState()
@@ -99,6 +100,7 @@ public void Execute_Failure_NotHaveKitchenEquipment()
                 ImmutableList<KitchenEquipmentState>.Empty,
                 ImmutableList<ItemState>.Empty
             ),
+            new DungeonState(),
             new VillageState(
                 new HouseState(
                     1, 1, 1, new KitchenState()
@@ -138,6 +140,7 @@ public void Execute_Failure_NotPlacedHouse()
                 ImmutableList<KitchenEquipmentState>.Empty,
                 ImmutableList<ItemState>.Empty
             ),
+            new DungeonState(),
             null
         );
 
diff --git a/backend/app/Savor22b.Tests/Action/PlaceUserHouseActionTests.cs b/backend/app/Savor22b.Tests/Action/PlaceUserHouseActionTests.cs
index 60a38e49..6c59ac09 100644
--- a/backend/app/Savor22b.Tests/Action/PlaceUserHouseActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/PlaceUserHouseActionTests.cs
@@ -64,7 +64,7 @@ private IAccountStateDelta createStateForRelocationHouse()
         prevGlobalUserHouseState.UserHouse.Add("1,0,0", SignerAddress());
 
         VillageState villageState = new VillageState(new HouseState(1, 0, 0, new KitchenState()));
-        RootState prevRootState = new RootState(new InventoryState(), villageState);
+        RootState prevRootState = new RootState(new InventoryState(), new DungeonState(), villageState);
 
         state = state.MintAsset(
             SignerAddress(),
@@ -141,6 +141,7 @@ private IAccountStateDelta createStateForInProgressReplaceHouse()
         VillageState villageState = new VillageState(new HouseState(1, 0, 0, new KitchenState()));
         RootState prevRootState = new RootState(
             new InventoryState(),
+            new DungeonState(),
             villageState,
             new RelocationState(1, 90, 1, 0, 0)
         );
diff --git a/backend/app/Savor22b.Tests/Action/PlantingSeedActionTests.cs b/backend/app/Savor22b.Tests/Action/PlantingSeedActionTests.cs
index 06d43c02..76384c69 100644
--- a/backend/app/Savor22b.Tests/Action/PlantingSeedActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/PlantingSeedActionTests.cs
@@ -95,7 +95,8 @@ public void Execute_InvalidVillageState()
 
         InventoryState inventoryState = getInventoryState();
         RootState beforeRootState = new RootState(
-            inventoryState
+            inventoryState,
+            new DungeonState()
         );
 
         beforeState = beforeState.SetState(
diff --git a/backend/app/Savor22b.Tests/Action/RemovePlantedSeedActionTests.cs b/backend/app/Savor22b.Tests/Action/RemovePlantedSeedActionTests.cs
index deef72b5..bb98eba8 100644
--- a/backend/app/Savor22b.Tests/Action/RemovePlantedSeedActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/RemovePlantedSeedActionTests.cs
@@ -19,6 +19,7 @@ public void Execute_Success_Normal()
         IAccountStateDelta beforeState = new DummyState();
         RootState beforeRootState = new RootState(
             new InventoryState(),
+            new DungeonState(),
             new VillageState(
                 new HouseState(
                     1, 1, 1, new KitchenState()
diff --git a/backend/app/Savor22b.Tests/Action/RemoveWeedActionTests.cs b/backend/app/Savor22b.Tests/Action/RemoveWeedActionTests.cs
index cd1c790f..904b498d 100644
--- a/backend/app/Savor22b.Tests/Action/RemoveWeedActionTests.cs
+++ b/backend/app/Savor22b.Tests/Action/RemoveWeedActionTests.cs
@@ -17,6 +17,7 @@ public RootState createRootStatePreset()
     {
         RootState beforeRootState = new RootState(
             new InventoryState(),
+            new DungeonState(),
             new VillageState(
                 new HouseState(
                     1, 1, 1, new KitchenState()
diff --git a/backend/app/Savor22b/States/RootState.cs b/backend/app/Savor22b/States/RootState.cs
index cff5086d..1ddd5a7e 100644
--- a/backend/app/Savor22b/States/RootState.cs
+++ b/backend/app/Savor22b/States/RootState.cs
@@ -5,6 +5,7 @@ namespace Savor22b.States;
 public class RootState : State
 {
     public InventoryState InventoryState { get; private set; }
+    public DungeonState DungeonState { get; private set; }
 
     public RelocationState? RelocationState { get; private set; }
 
@@ -13,31 +14,15 @@ public class RootState : State
     public RootState()
     {
         InventoryState = new InventoryState();
+        DungeonState = new DungeonState();
         VillageState = null;
         RelocationState = null;
     }
 
-    public RootState(InventoryState inventoryState)
+    public RootState(InventoryState inventoryState, DungeonState dungeonState, VillageState? villageState = null, RelocationState? relocationState = null)
     {
-        InventoryState = inventoryState;
-        VillageState = null;
-        RelocationState = null;
-    }
-
-    public RootState(InventoryState inventoryState, VillageState villageState)
-    {
-        InventoryState = inventoryState;
-        VillageState = villageState;
-        RelocationState = null;
-    }
-
-    public RootState(
-        InventoryState inventoryState,
-        VillageState villageState,
-        RelocationState relocationState
-    )
-    {
-        InventoryState = inventoryState;
+        InventoryState = inventoryState ?? new InventoryState();
+        DungeonState = dungeonState ?? new DungeonState();
         VillageState = villageState;
         RelocationState = relocationState;
     }
@@ -55,6 +40,17 @@ public RootState(Bencodex.Types.Dictionary encoded)
             InventoryState = new InventoryState();
         }
 
+        if (encoded.ContainsKey((Text)nameof(DungeonState)))
+        {
+            DungeonState = new DungeonState(
+                (Bencodex.Types.Dictionary)encoded[nameof(DungeonState)]
+            );
+        }
+        else
+        {
+            DungeonState = new DungeonState();
+        }
+
         if (encoded.ContainsKey((Text)nameof(VillageState)))
         {
             VillageState = new VillageState(
@@ -101,6 +97,10 @@ public IValue Serialize()
                 (Text)nameof(InventoryState),
                 InventoryState.Serialize()
             ),
+            new KeyValuePair<IKey, IValue>(
+                (Text)nameof(DungeonState),
+                DungeonState.Serialize()
+            ),
         };
 
         if (RelocationState is not null)