A sort of real time game that starts in third person, as a single character, and expands over time to a whole village. Set in a post apocalyptic world, where you wake up after the apocalypse and have to survive, eventually meeting other survivors and either fight them off or band together to form societies. Each person modelled like an rpg character, with skills sets and capabilities (electrician, plumber, computer geek, radio amateur, farmer and all the other things that make a self-sufficient village). It would need to model the dynamics of politics and how society was governed and the run-ins with other villages and roving bands of survivors.
A sort of mini civilisation but themed around rebuilding capability rather than discovering it.