Squad has a zombie mod. Not really sure how often it's played. Unfortunately don't have the game installed right now, so can't see if there's any servers running it.
As someone else pointed out STALKER. And there's also STALKER Anomaly/GAMMA (a massive modpack for Anomaly) for basically an infinite replayable sandbox. But probably would benefit from playing at least 1 normal STALKER game first.
Squad has a zombie mod. Not really sure how often it's played. Unfortunately don't have the game installed right now, so can't see if there's any servers running it.
https://steamcommunity.com/sharedfiles/filedetails/?id=2842239012&searchtext=zombie
As someone else pointed out STALKER. And there's also STALKER Anomaly/GAMMA (a massive modpack for Anomaly) for basically an infinite replayable sandbox. But probably would benefit from playing at least 1 normal STALKER game first.
save