If you have friends or like to solo zombies then that’s really all you could do in them. I imagine most lobbies are hacked for multiplayer. Honestly, the CoD franchise always draws new players but they put too many games out that are too similar and eventually everyone get bored of it and then ‘hates COD’. People always love the first or second game they played so it’s slowly transitioned from like the big red one or whatever to MW to MW2 then BO1&2 I’ve even heard advanced warfare lately. My point is 1&2 are basically like 4 without specialists. I wouldn’t recommend it unless you just want to experience different zombies.