Well, I say it's pretty good and fun.
Gameplay: It was pretty good. Still like the first Star Force, you have three panels to go on while the enemy has like 15 panels or something. I liked the Battle Network style way much better but this is ok. 3-d doesn't make the game look better and one of my friends who saw me playing it said to me, are those Pokemons(to the EM wave viruses)? I guess you can say that the monsters look like weird kiddish stuff. The attacks are easy to dodge but then there's the question, if I only have three back row panels to walk on and the enemy has the rest, shouldn't I get owned very fast? No you don't get owned. The viruses are fairly easy. The boss battles are ok. They are easy at first but then they get harder and harder(talking about from regular version to SP/IF version, yes, IF, it's this new version of bosses when you go to a alternate future after you beat the main story line) to get a S rank on. Still, the Battle Network series was better. The characters in Battle Network also looked cooler than the Star Force series. Never-the-less, MSF2ZxN was interesting and I played it for a LONG time. The only problems I have with this game are that sometimes, you get this feeling that the English translations are stupid and don't make sense, and also the SP bosses are so god damn hard to find even with Cloak. I still haven't found like 5 SP bosses. Yeah, pretty interesting though. 9/10
Sound: It's ok, like the first Star Forces, samo samo(same old same old). 8.5/10
Graphics: I dig the Battle Network series way more than this. Like I said, characters were much cooler and so were the viruses. But you get use to the graphics in this game after a while. 8.5/10
Online: This is where there's a problem with this part. You don't know who you get to face against. The first time I went online, I got owned by this guy who had like 1600 HP, you may think, oh, 1600 is nothing, but this dude had like 2-3 gigachips in his folder. IT WAS CRAZY, I got owned like nothing. I hated that and that's why I don't like going online. But if you find the right person, it's pretty fun, and it's also fun with friends. I play in my tutoring school class with other people and heck yeah it's fun. 8/10
Storyline: It's pretty good. I liked it, except for the side quests. That got annoying. You have to keep going to places, encountering many viruses on the way. That was the only thing I got really pissed off at. Oh god I hate wasting my time walking to a place that takes like 5-10 minute because of the freaking annoying virus battles. No, you can't take the bus to those places. There's three places where you can take the bus to go to and three places where you have to "jack in" and go into a satellite and walk to those places. It gets super annoying but the main storyline is good. 8.5/10
Overall I give this a 8.5. It's pretty fun, and I recommend you guys to try it out. I don't think it matters if you didn't play the first Star Force(I did though) because it really doesn't tie in with the first game. Buy it and try it.