It really is a good game. I mean, it seemed there were always new things added to each game. But after Mega Man X, it kinda seemed to be the same thing recycled over and over. Go through some level, defeat the boss, get a new power, maybe play the level again to find some secret power-ups, go to the next level, repeat. Then get to the big boss and beat him. Then the next game, the same boss (Sigma, right) was back again. He just never seemed to die.
Oh well. At least Mega Man X has a high replay value for me.