The full game was never released, even in the years between this coming out and City of Heroes eventually shutting down. So this quickplay pack is all that really remains of this particular tabletop adaption.
It's interesting, and tries very hard to replicate aspects of the MMO that maybe it shouldn't. A curiosity more than anything else at this point, if you played City of Heroes and were interested in how it might have gotten adapted to tabletop play, well, it's free. Check it out. Maybe even try running a session. Don't plan on it going beyond one session, though. There's lots of other, much better, and actually complete superhero games you can play.