F1st's only sins are the lack of the improvements made in its successor, especially dynamic hitsounds for each note type, but it's still an expansive and joyful rhythm game to play with an ENTIRELY unique setlist of zero returning songs, making it a wonderful standalone rhythm game that doesn't feel the need to wallow in reincorporation.

If you can only get one DIVA game, I would recommend F2nd, but this one is well worth playing beforehand as a worthy introduction to the series.