This Survival mod is not a mod. It's more of a DLC. It should be easy to remove if you want to. no , It shouldn't you should always have a choice whether or not to actually play the DLC but I can't think of any DLC in any game , where you can just remove it mid game , without any problems in fact , I can't think of any DLC that ever discussed removal , since why would you want to remove content you bought for your game? so yeah , you should be able to toggle it on or off , but you shouldn't really be able to remove it from your game One thing is, that according to the ingame text, Survival Mode can be enabled/disabled at will in settings. However, removing the DLC itself. EDIT: Also, in contrast to F4, Survival mode does not disable saving or console:-)