Which part are you stuck on ? Do you have the basic platform working and it's only the spawning part that is the problem ? Have you gone through the tutorials ? Have you looked at the FAQs or tried the search for examples of this ? viewtopic.php?f=147&t=164447&hilit=+random
is an example from a couple of days ago - uses families which are not in free version (are you using free?)
August 2015 - I misplaced a lot of links - I will try to find backups and repost. If You find a post that interests please reply to post with @rampackwobble and I will get a nudge!
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