Today I was torn between trying Hawken or Doom 3 BFG but I went with the latter as it's one of my old favourites. The BFG version of Doom 3 includes slightly improved visuals over the original, extra missions that never made it in the original release and a few other extras (like stereoscopic rendering) which make it perfect for the Rift.
Unfortunately, when John Carmack originally added Rift support in to the game the SDK was completely different. It was all hard coded to work with the original prototype units and doesn't work correctly with the new Developer Kits. Since the source is available however some clever modders have taken it upon themselves to put the Oculus code back in to the game and have released the binaries so we can use them in our Doom 3 BFG installations.
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