In Final Ninja you play an anime-inspired ninja armed with throwing stars, a grappling rope, and the ability to stealth-hide into the shadows. The stealth mode is a pretty fun tactic, as you'll be met with lots of security systems and enemies that will require a delicate touch to overcome. The grapple is definitely the key mechanic that makes this game shine.
You're charged with the task of completing each level by reaching a black data access card, all with the intent of facing down your nemesis, Akuma. It's the classic "student tries to rebel against old-and-wise master" story, as you're called into action once again after 10 years of meditation to don the special ninja suit and vanquish your arch rival. You can use the [arrow] or [WASD] keys to run and jump, while the mouse button fires your throwing stars and grapple (aimed by the mouse cursor). Pressing [down] or [S] will let you enter stealth mode, a state in which you'll become virtually transparent except for your cool green, glowing eyes. This state allows most enemies and security lasers to pass you by you undetected. And it wouldn't be a ninja game without wall-jumping, would it? You can push against any wall to latch onto it, slowing your fall until you jump in the opposite direction.