For me personally, it has to be animal pulser. I go into a Base, hide in a small room and activate it. Now I can witness a custom manhunt pack against my enemies! It’s so much fun to watch.
When I started playing my village maps I would play on (community) builder, but the raids would get pretty big because of colonist wealth. I’d just draft all colonists,form a blob and march straight into the raid. Hence my gigantic hospitals.