Исправление

AntiAircraftGun/AntiAircraftGun/MapsCollection.cs

@@ -123,7 +123,7 @@ namespace AntiAircraftGun
                         case "SimpleMap":
                             map = new SimpleMap();
                             break;
-                        case "MySecondMap":
+                        case "SimpleMap2":
                             map = new SimpleMap2();
                             break;
                     }