You are a ninja. You must do ninja things, like stay in the shadows and not be dead. Your only weapons are your mind and a… mouse?
This is the new promotional site that Klei entertainment has put up to promote their new game Mark of the Ninja. It is just a little ninja text adventure but if you do well you get to see a little prize at the end. And by prize I mean a video that shows off some pretty interesting gameplay of their actual game. Light and shadow play a key roll, as they should in a ninja game, and Klei once again knocked the visuals out of the park.
You can expect mark of the ninja on XBLA this summer. Until then visit the Mark of the Ninja text adventure page and have a few minutes of fun.