When you think of stealth based video games, you may think of classic 3D based games such as the Metal Gear or Splinter Cell series of games. Stealthily slinking around environments waiting for your opportunity to pick off unsuspecting guards one by one. But how would this formula work in a 2D platformer? The fine folks at Klei Entertainment have answered this question with their latest offering Mark of the Ninja for XBLA. The studio is well known for the Shank series which are in your face, combo heavy beat ‘em ups, but how well do they make the shift over to the stealth genre?