A new gameplay trailer for Mark of the Ninja has snuck out of E3 and onto the internet. Developer Klei Entertainment, the masterminds behind the Shank series, have created a game far different from their amazingly bloody brawler series. The trailer depicts one scene of stealthy murder, with the ninja carefully manipulating his foes, taking them out, then hiding their bodies. Gameplay looks noticeably slower than Shank, which isn’t a bad thing. Mark of the Ninja will release this summer.