Which game did you get Neptunia or Neptunia mk2? They play a bit differently. I actually like Neptunia more than Mk2 for story, though gameplay is definitely more enjoyable in Mk2. Both games are parodies of the games industry, so they have a lot of jokes both direct and subtle. If you're up from some zany antics by a bunch of console inspired moe girls then you'll have a blast.

Thankfully, Victory coming out soon will be having Neptune as the main character again, which is one of the main reasons why I did not like Mk2 as much, just wasn't as funny without Neptune. Though will say that there is one ending in Mk2 that actually made me reverse my decision on Mk2's story and I actually love that ending a lot, it is considered a bad game, but I actually found it to be one of the best endings. Sadly, Idea Factory heard that fans didn't like it, which doesn't seem to be universally the case, as they said that they will not be making Neptunia games with that sort of ending anymore. Which is sad to hear, because it turned the game around for me.