Ryan Rigney: "Simply navigating Mark of the Ninja’s shadowy world is a joy, but the game’s most brilliant innovation is how it represents sound using visual cues. Virtually any action sends out a blue wave of sound that alerts enemies if it touches them. Louder noises like sprinting send out bigger sound waves, which can potentially reach the ears of far-off guards. As a result, there’s never any ambivalence about whether or not your actions will attract a guard’s attention. You know you deserved it whenever your actions alert a guard, making the game far less frustrating than any other stealth title I can recall."