Graphics suck, gameplay is COMPLETELY unrealistic, and check this out. You have a budget to buy a gun right? The only things you can buy are a gun (there are 4) a hopper (big, medium, small) a Co2 tank (same sizes as hopper) and sights. You can't even EARN more money, so there's no progression. It lags online (me and 2 friends were playing on a cable modem). I took 2 shots, and they both came out 3 seconds later. The single-player aspect sucks, because there isn't any point. All you can do is play free-for-alls, capture the flag, speedball, attack and defend, and go to a shooting range. There are two maps for each game. The map editor sucks, and its dumb. When you put in half of the stuff, it crashes. It's also waaaaaaaayyyyy too easy.
I wouldn't recommend this game. Buy Quake II for less and download the paintball mod. DON'T BUY IT!!! I'm giving it a 2 because it's paintball =)!