If you are turned on to PC shooters than you must buy this game.
What happens when you mix Van Helsing science fiction with a PC shooter. Return to Castle Wolfenstein is what happens. Visually this game isn't very appealing, but the gameplay sure makes up for it. The story mode is challenging, with great boss battles. The Artificial Intelligence isn't exactly as great as Halo's, but the enemies don't go down easy. This game mixes in a storyline that couldn't be possible with crazy World War II gorilla warfare gameplay.
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The story is exceptionally good. If you don't know anything about the previous Wolfenstein games than this won't exactly leave you confused. You will start off playing the game with the impression that its like any World War II game.... but after the first few levels you begin to think that something unnatural is going on. I don't want to give away too much, but lets just say that German Fascists aren't the only enemies you will be fighting.
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By now you should be getting the general idea of the single player mode. Good news is that not only is there a great story mode, but a well executed multiplayer mode. There are a few bad things about this though. First off, you can't host games unless you buy software that lets you create your own server. Second off, there are very few servers so you might have a hard time finding players. The upside to the multiplayer is that there is no camping. If you aren't constantly moving from place to place you will be slaughtered. Unlike some other games were you can set mines, and snipe from a good spot, this is a bit more realistic. After you take a shot, the best thing to do is run away and find another spot. Due to this games difficulty, you won't be joining in right away and getting 10 or 20 kills a game unless you are very talented. It took me about a week before I started to get more kills than deaths. You just have to get used to the game style, and if you transferred from console shooters, the keys.
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Overall this game is a great bargain, comparable to The Orange Box. There are few games that offer so much to do for such cheap price. The only thing that might bother you is the difficulty and the obsolete graphics if you are migrating from the Xbox 360 or PS3. If you are a fan of shooters, than you should defiantly give Return to Castle Wolfenstein a try.