https://www.pcgamer.com/final-fantasy-15-on-pc-will-support-xbox-one-cross-play-for-online-co-op/ >The Windows edition of Final Fantasy 15 will feature cross-platform co-op with Xbox One players, according to the Microsoft Store listing for the game.  >The game's Comrades DLC, which came out on consoles last year and will ship with the PC version, introduced online co-op to the game, with players working together to complete quests. So that's likely where the "Xbox Live cross-platform co-op" will come in (don't expect to run through the campaign with your friends on console or anything like that).