cheapest price i can see most are 34.99 and 39.99 - also dont forgot quidco
Darksiders is a third-person, single player action/adventure game inspired by the characters, themes and mythology of the apocalypse and the battle of Armageddon described by the Book of Revelation. But this modern interpretation is not your run of the mill Sunday school stroll through the New Testament. In the game players take on the role of "War," one of the dread Four Horsemen of the Apocalypse. But things are not as they were.
Once the unstoppable and just wielder of divine retribution, War is now reduced in stature and cast out amongst the ruined lands of the Earth that he himself devastated. All that remains is the search for the truth behind his betrayal and the survival of its consequences.
review here - http://uk.gamespot.com/xbox360/action/darksiderswrathofwar/review.html?om_act=convert&om_clk=gssummary&tag=summary;read-review
got 8.0 on gamespot and has good reviews on amazon etc