was there a mario dance game?(ignore spelling isues!)

this bugged the crap out of me but one day when i was waching t.v. i saw a comercial for a mario dance game that came out and when my dad and me went to the game we never found it...did this game exist or was i just imagining it? 😕

http://en.wikipedia.org/wiki/Dance_Dance_Revolution_Mario_Mix

Google is a glorious thing.