Ninja Crusaders for Nintendo (NES)
They struck without warning, wiping out the Earth's defenses in one
master stroke. Cities were crushed, and the invading aliens showed no
mercy! A small resistance force of Ninja, refusing to be conquered,
still remained to fight the evil Inimicus. A daring plan was devised by
the Ancient Ones to send out two special Ninja, and annihilate the alien
threat once and for all!