War games is a fairly expansive area imo, I notice most people are going with FPS but there are games like Age of Empires, Anything from the Total War series, Dawn of War II (beta is open at the moment) or Mark of Chaos which are based around one of the more popular war games worlds "warhammer" best bet i can say is download some demos and give things a try, like another member mentioned, download steam and have a look at the stuff that's available on there
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