Nice job with the Boneyard tileset Blizzard Buffalo. And for that matter, with this project in general. While I don't have anything I want ripped from a game, I'm sure other people might.
You should also submit these on Spriter's Resource and MFGG as appropriate.
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As for Mario's Nightmare Quest? Well, it's currently on Fusion Gameworks, ROM Hacking.net or the GCN at the moment.