diff --git a/src/coffin.py b/src/coffin.py
index 3bc3315..2fb4685 100644
--- a/src/coffin.py
+++ b/src/coffin.py
@@ -34,14 +34,18 @@ class CoffinObject(Object):
 
             # Determine item to drop
             if self.specified_item == "random":
-                item_type = ItemProperties.get_random_item()
+                # Check if we're in survival mode (level_id 999)
+                is_survival_mode = hasattr(self.level, 'levelData') and self.level.levelData.get('level_id') == 999
+                item_type = ItemProperties.get_random_item(survival_mode=is_survival_mode)
             else:
                 # Validate specified item
                 if ItemProperties.is_valid_item(self.specified_item):
                     item_type = self.specified_item
                 else:
                     # Fall back to random if invalid item specified
-                    item_type = ItemProperties.get_random_item()
+                    # Check if we're in survival mode (level_id 999)
+                    is_survival_mode = hasattr(self.level, 'levelData') and self.level.levelData.get('level_id') == 999
+                    item_type = ItemProperties.get_random_item(survival_mode=is_survival_mode)
 
             # Create item 1-2 tiles away in random direction
             direction = random.choice([-1, 1])
diff --git a/src/item_types.py b/src/item_types.py
index e43b5d9..9af0fd4 100644
--- a/src/item_types.py
+++ b/src/item_types.py
@@ -10,6 +10,7 @@ class ItemType(Enum):
     GUTS = auto()
     HAND_OF_GLORY = auto()
     JACK_O_LANTERN = auto()
+    SHIN_BONE = auto()
     EXTRA_LIFE = auto()
     CAULDRON = auto()
     WITCH_BROOM = auto()
@@ -18,11 +19,18 @@ class ItemType(Enum):
 class ItemProperties:
     """Manages item properties and availability"""
 
-    # Items that naturally appear in graves and coffins (excluding special items like extra_life, cauldron, witch_broom)
-    RANDOM_ELIGIBLE = {
+    # Items for story mode (graves and coffins) - no powerful items
+    STORY_MODE_ELIGIBLE = {
+        ItemType.HAND_OF_GLORY: "hand_of_glory",
+        ItemType.JACK_O_LANTERN: "jack_o_lantern"
+    }
+
+    # Items for survival mode (graves and coffins) - includes powerful items
+    SURVIVAL_MODE_ELIGIBLE = {
         ItemType.HAND_OF_GLORY: "hand_of_glory",
         ItemType.JACK_O_LANTERN: "jack_o_lantern",
-        ItemType.GUTS: "guts"
+        ItemType.GUTS: "guts",
+        ItemType.SHIN_BONE: "shin_bone"
     }
 
     # All possible items (including special ones)
@@ -30,6 +38,7 @@ class ItemProperties:
         ItemType.GUTS: "guts",
         ItemType.HAND_OF_GLORY: "hand_of_glory",
         ItemType.JACK_O_LANTERN: "jack_o_lantern",
+        ItemType.SHIN_BONE: "shin_bone",
         ItemType.EXTRA_LIFE: "extra_life",
         ItemType.CAULDRON: "cauldron",
         ItemType.WITCH_BROOM: "witch_broom",
@@ -41,9 +50,12 @@ class ItemProperties:
         return ItemProperties.ALL_ITEMS.get(item_type)
 
     @staticmethod
-    def get_random_item():
+    def get_random_item(survival_mode=False):
         """Get a random item from eligible items"""
-        item_type = random.choice(list(ItemProperties.RANDOM_ELIGIBLE.keys()))
+        if survival_mode:
+            item_type = random.choice(list(ItemProperties.SURVIVAL_MODE_ELIGIBLE.keys()))
+        else:
+            item_type = random.choice(list(ItemProperties.STORY_MODE_ELIGIBLE.keys()))
         return ItemProperties.get_sound_name(item_type)
 
     @staticmethod
diff --git a/src/level.py b/src/level.py
index 57e7ee0..a13feb2 100644
--- a/src/level.py
+++ b/src/level.py
@@ -151,7 +151,9 @@ class Level:
                     # Story mode: use item as specified
                     grave_item = obj.get("item", None)
                     if grave_item == "random":
-                        grave_item = ItemProperties.get_random_item()
+                        # Check if we're in survival mode (level_id 999)
+                        is_survival_mode = self.levelData.get('level_id') == 999
+                        grave_item = ItemProperties.get_random_item(survival_mode=is_survival_mode)
 
                 grave = GraveObject(
                     xPos[0],