Actually, yes. I remember seeing a Super Smash Brothers fan game on the old Nintendo Nsider Forums. You need to set some objects as death walls (Like in Smash Bros., with all the fancy beam effects of death), and then make a platform engine. I really do hope you make this, the guy who made the fan game made a little of misspellings and overall it was...atrocious.
If you need help on how to deal with Platformer settings, the official site should have it, or maybe this place. Haven't been here on the forums for a long time. You also need to be able to set all the Fighting mechanics. Now, I'm not sure how a Fighting Game exactly works, but if you search around (Maybe not this site but other places), you can find something.