Batman: Arkham Origins. Was gonna wait until this was a bit cheaper but I got paid today anyway and thought f**k it. First impressions after about an hour and a half are that its not as good as the other two games but its certainly not far behind them in terms of quality. Visually I don't think its about on par with the other, no real graphical improvements here, but im fine with that as they looked great anyway. If you loved the other two, theres no doubt you'll dig this one and if I didnt know a different developer had made it, I dont think I would have even noticed at all. They've done a great job of emulating Rocksteady's entries in the series.
Like I said I havent been playing it long so I cant give a proper verdict yet but so far its worthy of the Batman: Arkham "insert title" name.