[Kagetora]

Yeah they are awesome all right but right before you get the ringworld tech you get the tech to change all the planets into your atmosphere which if you have any decent number of planets going would give you so much population that it wouldn't freaking matter anymore. Not to mention the increase in resources. I never said the ringworlds weren't good I just said they were impractical for a serious war and are really only good for show. They just show up too late in the game and cost far too much research and resources to be worth it.