Super Mario Crossover was already a miracle, faithfully dropping protagonists from Contra, Mega Man, Castlevania, Zelda and Metroid into Super Mario Bros. A teaser trailer (that's right, a trailer for a Flash game!) after the break heralds the arrival of another NES-era champion: the wall-climbing, statue-hunting ninja in the sleeveless uniform, Ninja Gaiden's Ryu Hayabusa. Ryu brings his wall-climbing ability from his NES games, as well as the shuriken and boomerang-style Windmill Shuriken weapons.
Now we'll get to see how powerful Ryu can be in a game free of heat-seeking birds! Or, we'll get to see that whenever creator Jay Pavlina actually makes the new version of Crossover available.