Compatibility
It has been discovered that DDR Hottest Party 2 is not compatible with some 3rd party dance mats made for Dance Dance Revolution Mario Mix and 3rd party mats made for Dance Dance Revolution Hottest Party. Cable converters, such as those made by DDR Game, exist to get around this issue. It is compatible with most Gamecube pads, even when used as 2nd/3rd/4th player.
Read more about this topic: Dance Dance Revolution Hottest Party 2