diff --git a/games/game_dungeonsiege2.py b/games/game_dungeonsiege2.py
index 448c851..c111293 100644
--- a/games/game_dungeonsiege2.py
+++ b/games/game_dungeonsiege2.py
@@ -1,5 +1,7 @@
 # -*- encoding: utf-8 -*-
 
+from typing import List, Tuple
+
 from PyQt5.QtCore import QFileInfo
 
 import mobase
@@ -7,7 +9,55 @@ import mobase
 from ..basic_game import BasicGame
 
 
-class DarkMessiahOfMightAndMagicGame(BasicGame):
+class DungeonSiegeIIModDataChecker(mobase.ModDataChecker):
+    def __init__(self):
+        super().__init__()
+
+    def get_resources_and_maps(
+        self, tree: mobase.IFileTree
+    ) -> Tuple[List[mobase.FileTreeEntry], List[mobase.FileTreeEntry]]:
+
+        ress: List[mobase.FileTreeEntry] = []
+        maps: List[mobase.FileTreeEntry] = []
+
+        for e in tree:
+            if e.isFile():
+                if e.suffix().lower() == "ds2res":
+                    ress.append(e)
+                elif e.suffix().lower() == "ds2map":
+                    maps.append(e)
+
+        return ress, maps
+
+    def dataLooksValid(
+        self, tree: mobase.IFileTree
+    ) -> mobase.ModDataChecker.CheckReturn:
+        # Check if we have a Resources / Maps folder or .ds2res/.ds2map
+        ress, maps = self.get_resources_and_maps(tree)
+
+        if not ress and not maps:
+            if tree.exists("Resources") or tree.exists("Maps"):
+                return mobase.ModDataChecker.VALID
+            else:
+                return mobase.ModDataChecker.INVALID
+
+        return mobase.ModDataChecker.FIXABLE
+
+    def fix(self, tree: mobase.IFileTree) -> mobase.IFileTree:
+        ress, maps = self.get_resources_and_maps(tree)
+
+        if ress:
+            rfolder = tree.addDirectory("Resources")
+            for r in ress:
+                rfolder.insert(r, mobase.IFileTree.REPLACE)
+        if maps:
+            rfolder = tree.addDirectory("Maps")
+            for r in maps:
+                rfolder.insert(r, mobase.IFileTree.REPLACE)
+        return tree
+
+
+class DungeonSiegeIIGame(BasicGame):
     Name = "Dungeon Siege II"
     Author = "Holt59"
     Version = "0.1.0"
@@ -24,6 +74,7 @@ class DarkMessiahOfMightAndMagicGame(BasicGame):
 
     def init(self, organizer: mobase.IOrganizer):
         super().init(organizer)
+        self._featureMap[mobase.ModDataChecker] = DungeonSiegeIIModDataChecker()
         return True
 
     def executables(self):
diff --git a/games/game_stardewvalley.py b/games/game_stardewvalley.py
index 8d47acc..3ede10e 100644
--- a/games/game_stardewvalley.py
+++ b/games/game_stardewvalley.py
@@ -11,15 +11,17 @@ class StardewValleyModDataChecker(mobase.ModDataChecker):
     def __init__(self):
         super().__init__()
 
-    def getDataFolderName(self) -> str:
-        return "mods"
-
-    def dataLooksValid(self, tree: mobase.IFileTree) -> bool:
+    def dataLooksValid(
+        self, tree: mobase.IFileTree
+    ) -> mobase.ModDataChecker.CheckReturn:
         count_ok = 0
         for e in tree:
             if e.isDir():
                 count_ok = e.exists("manifest.json", mobase.IFileTree.FILE)  # type: ignore
-        return count_ok > 0
+
+        if count_ok > 0:
+            return mobase.ModDataChecker.VALID
+        return mobase.ModDataChecker.INVALID
 
 
 class StardewValleyGame(BasicGame):