Mark of the Ninja is a side-scrolling action stealth game in which the player has to sneak through a series of environments while staying out of sight of guards and performing silent takedowns. It features various levels and challenges as well as puzzles.
Just wanted to say that this is one of my favourite platformers when it was released. Loved the stealth mechanics as well as the option to play stealth or just crazy and kill everyone. Also the unlock items system was pretty neat as well.