The Sims 4: StrangerVille

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Start your investigation and solve the mystery of a desert town that holds a deep, dark secret.

Key features

Different world — Explore StrangerVille, a rural desert town shrouded in secrecy. Encounter weird weather, creepy townies, dangerous plants, odd collectibles, and more.
Unravel the story — Immerse your Sim in unique and mysterious events. Unmarked vans appear in neighborhoods, government agents use secret listening devices, and scanners are key in detecting the unusual.
Crack the code — Have your Sims investigate using their military training, searching for clues to solve a mystery that lies within the secret lab.
Suit up your Sim — Get Sims in the mystery-solving mood by gearing them up in desert-inspired clothing and military fatigues, or prepare them for the end with conspiracy-themed clothes, secret agent attire, and a hazmat suit.