Someone posted recently in this community about a The Days Before single player mod that may be developed and it made me wonder.
As servers for games are shutdown I occasionally see fan-run replacements but I’m curious about singleplayer and offline mods. It seems like more of a niche as not all multiplayer games would work as well without other players.
NFS World come to mind, there is mod that allows you to play the game with emulated server (so you can play it offline). Also the community made an effort to recreate the client and restore the game by making community servers (alongside some added custom content).
Maybe MMOs that have custom client or simply localhosted emulated server mod count on this context.