Klei Entertainment are taking their sidescrolling action formula, honed to a point in Shank and Shank 2, and applying liberal helping of ninjas. Mark of the Ninja is the new title from the studio, and its 2D stealth gameplay looks like a nice twist on the classic Shank beat 'em up formula. 

The developer has announced plans to release Mark of the Ninja sometime over the summer, although the game won't be a part of Microsoft's Summer of Arcade promotion, which will be kicking off early next month (an indie developer with claims of a summer release date always seems to be under suspicion of releasing as part of the promotion.) Stay tuned to GameShampoo for more news on this and Klei's other projects.