Hi Blight. Looking through the options in an extended world class, you have the following option: removeObjects(Collection) - where Collection is the list of objects to remove further to this there is this: getObjects(class) - which will return you a list of all objects if class is set to null or all the objects of class type (i.e. actor.class). Between these two, you should be able to figure out what to do. i.e. get the list of objects to be removed, trim down items from that list and then ask the removeObjects to do the work. I hope this helps nudge you in the right direction. If I've missed the point, do let me know... Regards sp33dy.