Excellent game for adults, who like to have some action packed fun.
For completeness, the mini summary: The game is about a cool half-vampire called Bloodrayne who saves the world (surprise!). She needs to figure out what is going on and goes through a lot of very bad "things" to do it. It is basically an adult third-person shooter, similar in style to Tomb Raider crossed with Doom (the original hell ones).
The main theme of the game of course is slaying... literally with long knives and lots of blood. Which is something I truly abhor, but the two Bloodrayne games are really, really, really suburb at letting you play the role of the half-vampire going-on-a-killing-spree for a few hours and having the time of your life. The story is good with some black humor and there are twists which keep you interested as it progresses. I note a lot of games with really crappy stories and much less game-quality and variety got much better scores... that should tell you a lot.
What I liked most about this game is that it is one of the few games around that is not just the boring point-and-shoot fare that most companies feed us with. You get in there and and use your (acquired) skills, like blood-lust, to get the bad guys. You have a number of weapon options, not just 50 guns and a chainsaw. The moves are really nice and add a lot of fun to the game play. You will find yourself trying out the moves in quite areas just to enjoy the show! A few puzzles to keep your higher brain functions running are in there as well. The methods you need to use during the game, make the whole game experience much more interesting than just running around shooting everything you see.
What is bad is that this game requires you to learn a few key combos to get the best out of Bloodrayne's moves. For people used to console keypads or who have played this type of game before, this should not be too challenging though. For me it was a bit difficult because I do not usually like these sort of games. The game can be enjoyed without having to know too many of them though, a few of the more powerful moves let you get by quite well and enjoy the show.
The graphics are very good but don't slow to a crawl on an older machine Many of the levels and the characters have obviously had a lot of work put into them to make them look good. The heroine is a real looker, which is good no matter what the sex (yours or the game character), because it is just more pleasant to look at.
All in all definitely rates a 9.x if you like third persons shooter games with a twist. Higher if you a) are male b) can handle key combos c) like original games. Less if you like a) straightforward point-and-shoot b) multi player only c) strategy over everything d) overly conservative.
If you don't mind slightly dated 3D graphics, I would also suggest playing the old original Bloodrayne. It is the original and really started some of the more popular complex acrobatic style games, such as the more recent Prince of Persia series.
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Cheers,
Duncan