Mark of the Ninja doesn't look like your average stealth game. You won't be hiding in cardboard boxes or waiting 10 minutes for soldiers to turn around. And it's all two-dimensional.
Mark of the Ninja, which developer Klei Entertainment first announced February in the form of a neat text adventure, is more reminiscent of platformers like Prince of Persia or Outland than any stealth game I've seen. But it looks great, and the mechanics, which involve manipulating sound and darkness to avoid enemy contact while you climb and grapple up walls and ceilings, seem pretty damn neat.
Klei says Mark of the Ninja will be out this summer for Xbox 360.