Word of advice: don't treat this like a MMO game.
That basically sums it up, but if you actually bother to read on, be my guest.
I could've rated this game long ago when I first started playing it outside of Steam. I didn't really think it was good back then, I still don't think it's really good now anyway. Don't take my words for it though, most of the reviews you read will tell you the same thing: it is mostly a dead game these days. You could find a few matches here and there, but even if you do, I can assure you they're mostly inhabited by players of the same clan/community, and you'll end up with either 1 out of 2 outcomes:
1) You get kicked because they're having their lovely "clan battles".
2) You get mowed down by an entire clan teaming up against you.
Lucky for you, CrimeCraft isn't all about PvP. It has PvE matches (which actually incorporates the only cooperative play besides GvG matches) as well as an interesting story-driven campaign, IF (yes, if) you pay for the "ticket to the movie".
So yeah, you probably already have the idea that CrimeCraft is, for the most part, a money-driven game. A lot, if not all, of the features in the game require you to cough up the dough you earn in your life and not in-game. Don't get me wrong though, despite that, CrimeCraft is far from a "pay-to-win" game. Buying good equipment does not make you invincible or give you insane damage; it's still about reflex and skills.
If there are certain products that interest me (yes, I paid for CrimeCraft) it would be character customization options, but that's just me. The only reason I ever play CrimeCraft is the character customization and the PvE element.
I would recommend this game, but as I said in my first sentence: only get it if you're not planning to treat it like a MMO game, Get friends to play with you and treat it like a LAN game, but not a MMO.
Hikumi gives this game, a 5 out of 10.