Thanks everyone for your thoughtful and helpful responses. So what I'm understanding here is that:
1 - the CD/DVD is a ripoff. Thanks for the heads up.
2 - My 2 best options are either stepmania o ...
My daughters are 8 & 12 and would like to do DDR (the mat with screen to give you points for correct steps)
I know NOTHING about this - as you can probably already tell.
We do not own a Playstat ...