Shien's Revenge

Shien and Aska were swift ninjas fighting in a civil war. Having defeated hundreds of enemy soldiers, monsters suddenly appear and kidnap Aska. It is up to Shien to defeat them and rescue Aska from these creatures beyond the Time Gate. Shien's Revenge is a first-person Operation Wolf-style shooter that puts the player in the role of Shien the ninja. Movement is automatically controlled by the game, which scrolls horizontally or vertically. (mobygames.com)