Nice attempt at trying to emulate DDR
...But compared to this, there are simply better DDR sims out there you can download for free, and with better quality, graphical style, synchronization, and the ability to customize soundtracks and so forth...
The first one coming to mind being -Dance With Intensity-
And to whoever said Heavy is impossible here... You obviously haven't played(Or probably never seen anyone play) BeatmaniaIIDX :P