One of several Megaman games that still has yet to be released in the US. I haven't actually played Super Adventure yet, so I'm afraid I have little to say about it.
All I really know is that the story has something to do with Roll getting sick due to some goings on with Wily and a new project of his called Lamoon. As always, it's up to Megaman to stop Wily, but the bad doc has also reconstructed his robot masters from Megaman 2 & 3 for him to deal with as well. The game plays in a first person shooter mode, and relies heavilly on some well-drawn FMVs. Other than that, I'm afraid I can't say any more about it.