diff --git a/.beans/nuzlocke-tracker-cftf--filter-out-routes-with-no-encounters-for-active-ga.md b/.beans/nuzlocke-tracker-cftf--filter-out-routes-with-no-encounters-for-active-ga.md
new file mode 100644
index 0000000..6970211
--- /dev/null
+++ b/.beans/nuzlocke-tracker-cftf--filter-out-routes-with-no-encounters-for-active-ga.md
@@ -0,0 +1,11 @@
+---
+# nuzlocke-tracker-cftf
+title: Filter out routes with no encounters for active game
+status: completed
+type: task
+priority: normal
+created_at: 2026-02-14T14:38:05Z
+updated_at: 2026-02-14T14:38:19Z
+---
+
+Route orders are per version group, so both games in a pair share the same route list. Routes with no encounters for the active game should be filtered out in the list_game_routes endpoint.
\ No newline at end of file
diff --git a/backend/src/app/api/games.py b/backend/src/app/api/games.py
index 33ac589..67d747c 100644
--- a/backend/src/app/api/games.py
+++ b/backend/src/app/api/games.py
@@ -169,7 +169,11 @@ async def list_game_routes(
         }
 
     if flat:
-        return [route_to_dict(r) for r in all_routes]
+        return [
+            route_to_dict(r)
+            for r in all_routes
+            if any(re.game_id == game_id for re in r.route_encounters)
+        ]
 
     # Build hierarchical structure
     # Group children by parent_route_id
@@ -180,16 +184,24 @@ async def list_game_routes(
         if route.parent_route_id is None:
             top_level_routes.append(route)
         else:
-            children_by_parent.setdefault(route.parent_route_id, []).append(
-                route_to_dict(route)
-            )
+            # Only include children that have encounters for this game
+            if any(re.game_id == game_id for re in route.route_encounters):
+                children_by_parent.setdefault(route.parent_route_id, []).append(
+                    route_to_dict(route)
+                )
 
     # Build response with nested children
+    # Only include top-level routes that have their own encounters or remaining children
     response = []
     for route in top_level_routes:
-        route_dict = route_to_dict(route)
-        route_dict["children"] = children_by_parent.get(route.id, [])
-        response.append(route_dict)
+        children = children_by_parent.get(route.id, [])
+        has_own_encounters = any(
+            re.game_id == game_id for re in route.route_encounters
+        )
+        if has_own_encounters or children:
+            route_dict = route_to_dict(route)
+            route_dict["children"] = children
+            response.append(route_dict)
 
     return response