Test loading wrong saves

squirrelbattle/game.py

@@ -139,7 +139,15 @@ class Game:
         """
         Loads the game from a dictionary
         """
-        self.map.load_state(d)
+        try:
+            self.map.load_state(d)
+        except KeyError:
+            self.message = "Some keys are missing in your save file.\n" \
+                           "Your save seems to be corrupt. It got deleted."
+            os.unlink(ResourceManager.get_config_path("save.json"))
+            self.display_actions(DisplayActions.UPDATE)
+            return
+
         players = self.map.find_entities(Player)
         if not players:
             self.message = "No player was found on this map!\n" \