Killing Floor 2 is a game that was released in 2013 for the Xbox 360 and PC. It was later ported to the PlayStation 4 and Xbox One. However, it has been reported that Killing Floor 2 may not be cross platform between the platforms. This is because the game’s creator, Red Barrels, has stated that they are not interested in developing the game for both platforms. This could mean that Killing Floor 2 will only be available on one platform at a time. If this is true, it would make sense that it would not be released on other platforms until Red Barrels feels confident about its development process and whether or not the game would be successful on those platforms.