Mark of the Ninja. From running through the last level on New Game+ without killing anyone to getting a 7,000 point kill/terror combo while attempting to recover the inking tools on the sandstorm level, this game is a mastery of fun stealth gameplay.

I move into the area and knock down a hanging bomb trap with a bamboo dart, jumping over it and continuing on my way. I leap up to the next floor, behind the patrolling guard, and then nab onto the side of the building as I cut a second bomb from the ceiling behind the patrolling guard. I then toss a bamboo dart into the gong beside the bomb, distracting the guard.

As he goes to investigate he doesn't watch his footing, and steps on the explosive I'd torn down, blowing him up and summoning every guard in earshot. As they close in from either side and below, they see the dead body, and immediately freak out. The two on the sides fire at each other, and the one on the left is cut down. I hop over the roof, lower myself down so I can see the two floors below me, and wait for the guards to continue their now jittery patrol.

As the guard at the bottom floor comes into alignment, a toss a dart past the first guard, striking the guard on the bottom floor. Looking up, right at me, he begins to unleash a hail of random gunfire, right through the poor guard directly above him.

As the lone guard tries to get his nerves back under control, he fails to notice the original bomb I had cut loose, and steps on it, finishing the massacre without me ever having to draw my blade.