Klei Entertainment already has an unconventional ninja game available on Xbox Live Arcade, the infernally challenging platformer N+, which is actually a spruced up version of Metanet Software's Flash-based game N. Now the Shank dev is preparing to release a ninja game of its own making: Mark of the Ninja.
The Xbox Live Arcade title is due for release this summer a brief gameplay video on the game's official website confirms. You'll have to play along to see the clip though. An interactive text adventure awaits anyone who visits the website. Work your way through it to get a sense of how the game looks.