Ryu Hayabusa Invades Super Mario Crossover

All of you 8-bit fans out there have surely played Super Mario Crossover by this point, and if you haven't...get to it. It's one of the best Flash games we've seen, and is a dream come true for NES fans.

So far, you've had a chance to invade the Mushroom Kingdom as Mario, Zelda, Simon Belmont, Mega Man, Samus, and Bill Rizer from Contra. However, as the (awesome) trailer below teaches us, Crossover is about to get a dose of Ninja Gaiden. Take a look: