dancing fusion? being a ddr fan like myself, id say its just another rip of Dance Dance Revolution...
for the mats, id say that the mats dont come with the game unless the game is priced in the $150s.
you can find mats in the city around some asian stores for $25 bucks, theyre plastic mats and would last you a few years depending on how rough you are with them, id say if ur looking for a matt, save urself some cash and buy the steel mats from red octane, those would last u a VERY long time.
and for dancing games, recommended are the originals, ps2 - dance dance revolution max / max2 / extreme
=] hope that helped