and it doesn't work. first point, with your first trigger all the zombies would spawn at the same point of the map, so you better use a loop with "for each integer from 1 to xx do actions" . second trigger: i'm not 100% sure but i doubt it works, as you have no unit to compare the "matching" , best to use is (imo) a unit group with "pick every unit in playable area matching conditions" and then the conditions stated by Revolve. the events are correct