ohhh dont tell me overseer is over a decade old... I'm turning to DUST. I was in a like rotating rp group that did a lot of session RPs either fantrolls or original species and there were a few we attempted to use overseer alongside the rp for that dash of... realism? but the grinding and time sink required made it kinda desync but ooh... I remember those days fondly.
The other games that come to mind are the Farrago Fiction like EVERYTHING. There was(is? havent heard anything in ages) just an outright SBURBsim but also wrigglersim which everyone in my friend group got obsesssed with and LOHAE which connected to wrigglersim in interesting ways as well as was the start to like a larger expanded universe almost ARG type thing. Good stuff fun stuff