A:Answer According to onmsft.com, while the Xbox One version of COD is playable on the Series X, it doesn't support any of the upgrades you get with the next-gen version - specifically ray tracing, spatial sound, and higher framerates (120FPS). If you don't have a halfway decent headset or sound system, and a TV that can support 120 FPS, it probably isn't worth forking out the extra $10 just for prettier graphics.