Warner Bros. released a new trailer for their upcoming Nintendo DS title Lego Battles: Ninjago today. The trailer introduces us to the story of two brothers fighting the war between good and evil, rendered in some seriously awesome Lego CG The game also gives us a few glimpses of gameplay footage, as well as a narrator who gets you more and more stoked for what apparently is an unbelievable Lego epic. The Lego series of games lately have all been well received, so it’s really nice to see them working on series’ that aren’t based on other licensed properties. We still don’t have a firm release date but Spring 2011 is still scheduled as the release window.