Yep. First I played FFR for a few years and learn that it was based off of Stepmania which was based off of older rhythm games and things like DDR. I quit FFR a while before the site went down (the site was shut down for reasons that may bore you or interest you depending on your involvement with the sight).
But, yes, I do play Stepmania in replacement of it. Rhythm games for the fingers are addicting, especially after you're gotten good at them.