diff --git a/players.json b/players.json
index 9d5adc5..7e7034c 100644
--- a/players.json
+++ b/players.json
@@ -1,10 +1,10 @@
 {
     "expansions":
     {
-        "ShockColar1": {"players": ["Brosef"], "tags": ["shock"], "config": {"COM_port": "COM3", "shocker_ID": 24770}},
-        "RobotBarman": {"players": ["Tango", "TRS_MML"], "tags": ["drink"], "config": {}},
-        "ChallengeDB": {"players": ["TRS_MML"], "tags": ["challenge"], "config": {}},
-        "SourCandy": {"players": [], "tags": ["food"], "config": {}}
+        "ShockColar1": {"players": ["Brosef"], "tags": ["shock"], "class": "serialShocker", "config": {"COM_port": "COM3", "shocker_ID": 24770}},
+        "RobotBarman": {"players": ["Tango", "TRS_MML"], "class": "bar", "tags": ["drink"], "config": {}},
+        "ChallengeDB": {"players": ["TRS_MML"], "class": "challenge", "tags": ["challenge"], "config": {}},
+        "SourCandy": {"players": [], "tags": ["food"], "class": "candy", "config": {}}
     },
     "players": {
         "Brosef": {"flags": [], "expansions": {"exampleExpansion": {"playerOption": 5}}, "gamesSave": {"gameID0": 2}},
diff --git a/src/NoPELib/player_settings.py b/src/NoPELib/player_settings.py
index 1d4c23c..a5a0054 100644
--- a/src/NoPELib/player_settings.py
+++ b/src/NoPELib/player_settings.py
@@ -309,6 +309,9 @@ class ExpansionsManager:
     def _getPlayersFillMissing(self, expansionID):
         return set(self._cfg["expansions"].get(expansionID, {}).get("players", []))
 
+    def _getClassFillMissing(self, expansionID):
+        return self._cfg["expansions"].get(expansionID, {}).get("class", "")
+
     def _listPossiblyValidExpansions(self):
         """
         List expansions that are: included, defined in expansionsLib and available
@@ -317,7 +320,7 @@ class ExpansionsManager:
         activePlayers = set(self.playersManager.keys())
         possiblyValidExpansions = [
             expansionID for expansionID in self._includedExpansions
-            if hasattr(expansionsLib, expansionID) and
+            if hasattr(expansionsLib, self._getClassFillMissing(expansionID)) and
             not self._getPlayersFillMissing(expansionID).isdisjoint(activePlayers)
         ]
         return possiblyValidExpansions
@@ -325,7 +328,8 @@ class ExpansionsManager:
     def _createExpansion(self, expansionID):
         try:
             # Create the expansion
-            expansion = getattr(expansionsLib, expansionID)(expansionID, self)
+            expansionClass = self._getClassFillMissing(expansionID)
+            expansion = getattr(expansionsLib, expansionClass)(expansionID, self)
             # Update the lookup
             for player in self._getPlayersFillMissing(expansionID):
                 self._playersLookUp[player].append(expansionID)
@@ -367,7 +371,7 @@ class ExpansionsManager:
         possibleAddition = set(self._includedExpansions).difference(self._activeExpansions)
         filteredAddition = [
             expansionID for expansionID in possibleAddition
-            if hasattr(expansionsLib, expansionID) and
+            if hasattr(expansionsLib, self._getClassFillMissing(expansionID)) and
             playerName in self._getPlayersFillMissing(expansionID)
         ]
         # Create the expansions
@@ -406,7 +410,7 @@ class ExpansionsManager:
         expansionIsActive = expansionID in self._activeExpansions
         activePlayers = set(self.playersManager.keys())
         expansionHasNoPlayers = self._getPlayersFillMissing(expansionID).isdisjoint(activePlayers)
-        expansionDefined = hasattr(expansionsLib, expansionID)
+        expansionDefined = hasattr(expansionsLib, self._getClassFillMissing(expansionID))
         # Update the activation status
         activeChanged = False
         if expansionIsActive and expansionHasNoPlayers: