Failing that, there's always the route of someone making a "fan game" for it.
Interesting idea, but a lot of work for no comp. Most of the fan games I've seen someone has taken the existing game assets and manipulated them to their liking. What you suggest would require ground up creation of a whole new game.
There is the rather naive possibility that the fan ask the surviving devs to provide base assets that can be reused.
Or failing that, use other people's fanmade assets with permission, if such things exist.
Who knows? Might even become one of those games made by "the community" that almost never get updated cause of how hard it is to wrangle such a large and informal team.