Topic: ninja gaiden

i heard the ninja gaiden games are hard but i was playing them and thinking the 1st one was the hardest one but now im thinking the 2nd one is so what is the hardest and easiest ninja gaiden

Ninja Gaiden 3 is the hardest, and Ninja Gaiden 2 is the easiest.
Though unless you want the plot to get screwed over, play them in order.

The first one is the easiest, imho, though it has the ugliest graphics. The second one has some weird gimmicks, like wind blowing you into chasms, etc.