Guilty Gear creators Arc System Works have detailed their upcoming DSiWare defence project Castle Attackers, with a new trailer.
According to Siliconera the downloadable game, available for Japanese DSi owners at 500 points, is a real time defence game where you're balancing attacking your opponent's tower with defending and re-enforcing your own by using a set of skills cards.
There are over 50 stages spread across five different chapters.