I thought of one for StrangerVille too! (It would make a good 5-gen world like Del Sol Valley, and you could totally use my StrangerVille mystery sim Andromeda as one of the founders!)
StrangerVille -- Strange Strangers
StrangerVille used to be the center of a top-secret military research facility holed away in the middle of the desert (literally--it was built inside a massive hole). Rumor has it, something went wrong--really wrong--and the locals started acting really...strange. All that is known for sure is that the lab was shut down and locked up tight, and most of the town's residents lost their jobs and moved away. You came to solve the StrangerVille mystery, but you fell in love with the old ghost town, and now you want to restore it to its former glory. But first, you need to solve the mystery, because the rumors are definitely true...