Adding further power is a full gigabyte of DDR SDRAM memory.
At this time, new computers will have DDR SDRAM type memory.
It also follows that the higher performing cards (like DDR types) will cost more out of your pocket.
The original game, Dance Dance Revolution (DDR), has quite a few games on the Wii.
In the DDR series, developed by Konami, you follow arrows to the top of the screen and tap the corresponding arrow on the dance mat when it hits the Target Zone.