PlayStation Store recently stated: Gotham Knights would allow four player co-op. However, it seems that a error. The information has been changed and even the official trailer is only about two players.
Change in Gotham Knights’ description PS Store It was clearly “quietly”. Most importantly, the trailer states that “although you can play the whole adventure alone, you can also protect Gotham with a friend.” The trailer in no way hints at the presence of more than two players, nor does it even indicate that it will be possible to accompany artificial intelligence to reach four players.
Besides, World Bank Montreal He has stated in the past that the team specifically prefers a two-player co-op. This is because a four-player game requires environments designed for exactly this number: the game will not work with less active users.
As such, nothing has changed from previous announcements except that Gotham Knights will not be coming to PS4 and Xbox One. The old generation version was released during development and will only have support for the next generation.
Source: Multiplayer