I know there are dozens and dozens of ninja video games but this one kind of caught my eye.
Ninja Simulator is an action-adventure stealth game, which takes place in feudal Japan. You will play as a mercenary hired for missions of infiltration, espionage and elimination. Your actions will strengthen or overthrow rival clans and change the course of history.
https://store.steampowered.com/app/1323140/Ninja_Simulator/
