Although it had a very rough start, after 3 years, I can say that it has finally reached an amazing level. The graphics are very decent, the gameplay is incredibly addictive, the variety of weapons, skins, etc. is large (a big plus is that you can unlock them by playing), and its value even as a single player is significant. In the Deluxe Edition that I got (get it without a second thought, it adds 3 more levels and completes the story in a sense, which is worth it since it adds levels and new monsters), you follow 6 scenarios, through which you go through quite different levels until you complete the scenario. There are things to do and mainly to slaughter. If you are a fan of Left 4 Dead, get it without a second thought; it has become a really good piece of work. If you play it multiplayer, it obviously becomes even more fun, but it's not like it's necessary. Also, its difficulty, even on Recruit, is quite demanding, so for those who want a challenge, it has a lot to offer. It’s definitely worth it now.