Call of Duty: Black Ops 6 features a plethora of multiplayer content for players to get stuck into, whether it’s the horrifying zombies mode or the smattering of online multiplayer modes. Naturally, most players with a stable internet connection and an online subscription – at least on console – will be able to enjoy these without any issues. However, for those who still prefer to play with a friend by their side in split-screen co-op, it’s less simple.