The main campaign of Arma II, which unfolds piece by piece, sometimes beautifully, sometimes incoherently, is arguably one of the most interesting gaming experiences on the PC. Running battles through woodlands, interrogating locals, co-ordinating UAV drone strikes, riding mountain bikes, messing about with bombs, helicopters, and stolen Eastern European tractors: the open world military sim begins to cohere, like a formidably layered cake in the Gas Mark 5 oven of your imagination. The sheer variety of what you get up to is enthralling, and its little more than a sampler of what Arma II as a system, as a wargaming platform, is capable of. Yes, its messy and ill-judged at times, and recipe is ludicrous, but it is also bold and often brilliant.