Sengoku Ninja Tai

Sengoku Ninja Tai is an action game taking place in feudal Japan. The player must defend a castle against invading ninjas. The ninjas try to find their way to the castle over the winding paths surrounding it. The player controls an aiming reticle and can fire at them. After the roads, the ninjas still need to swim across the moat and then climb the ramparts. If a ninja manages to complete all three steps the castle explodes and the player loses. Shooting ninjas scores points. Ninjas closer to the castle are worth more points when shot.