StrangerVille The Sims 4 Articles

The Sims 4 StrangerVille Full Story Walkthrough [SPOILERS]


Before you read any further, you should be aware that this article contains major spoilers about the StrangerVille Mystery story. If you do not want to have the story spoiled for you, do not continue reading this article.

Presented by EA Game Changers

The Sims 4 StrangerVille is the first add-on pack in the The Sims PC franchise to introduce a story mode. In the StrangerVille Mystery story, your Sim discovers that the residents of StrangerVille are being affected by a disturbing illness and must follow the clues to uncover the source of the disease and destroy it. The story is optional; if you choose not to pursue the story when you arrive in StrangerVille, the plot will have very little influence on your Sim there. The town will simply remain a little strange, but if you want to rid StrangerVille of all its weirdness and restore everything to normal, you’ll have to play through the story.

I’m going to walk you through how to do just that!

Part 1: StrangerVille

Welcome to StrangerVille: “The only thing stranger than the people is the flora!”

Soon after moving in, the town’s slogan is starting to make sense to you. Some of the locals are acting a bit suspicious, and there’s a large number of Military and Scientists in town.

Try asking people about StrangerVille. They might be able to shed some light on this strange situation.


  • Talk to Sims about StrangerVille
  • Examine the door at the Secret Lab
  • Collect evidence at the Secret Lab
  • Collect 15 pieces of evidence around StrangerVille
  • Compile a Secret Dossier
  • Give Dossier to a Scientist, Military Personnel, or a Curio Shop Owner
  • Open the door at the Secret Lab


When you first arrive in StrangerVille, things don’t seem quite right. Something weird is going on in this town. Start by asking Sims around town about StrangerVille. Be sure to ask all kinds of Sims; the Curio Shop Owner, Conspiracy Theorists, Scientists, Military Personnel, Possessed Sims, and Civilians. Each of them will have unique information to share with you. After asking some folks around town, one thing becomes apparent; everything seems to point to the Secret Lab located in a crater outside of town. Head to the Secret Lab to investigate further.

The Secret Lab looks abandoned. The whole lab is sectioned off with barbed wire and there are papers scattered all over the main floor, as if whoever was there fled in a hurry. There’s a big metal door leading down to the basement. Examining the door will reveal that it’s locked and can only be accessed with a keycard. Before leaving the lab, stick around to collect evidence. Go through the entire main floor, rummaging through piles of papers on desks and abandoned file boxes lying on the floor. Don’t forget to take a picture of the door for evidence, too. In total, you should have 9 pieces of evidence in your inventory by the time you’re finished ransacking the lab.

Once you have your evidence, continue your search for clues around StrangerVille. There are multiple ways to collect evidence around StrangerVille:

  • Research the StrangerVille Archives at the library: This won’t always yield a piece of evidence, but you’ll uncover useful and interesting information about the town, nonetheless.
  • Plant a bug on Scientists and Military Personnel: Bugs can be purchased from the Curio Shop. Once you have a bug in your inventory, introduce yourself to a Scientist or Military Personnel and then select Plant Bug. Once the bug has been planted, use the surveillance station to listen in on their conversations. The starter trailer home in StrangerVille has one ready to go, but the surveillance station can also be purchased in Build/Buy.
  • Befriend Scientists and Military Personnel: Once you befriend a Scientist or Military Personnel, you can request evidence from them. Requesting evidence from Scientists and Military Personnel you are not friends with won’t yield any results.

Keep gathering evidence until you have 15 pieces of evidence in your inventory. Once you’ve obtained 15 pieces of evidence, you’ll be able to compile a Secret Dossier. Click on the evidence in your inventory to compile the dossier.

Show the Secret Dossier to a Scientist, Military Personnel, or the Curio Shop Owner to obtain a keycard to open the door at the Secret Lab. If a Scientist or Military Personnel refuses to give you a keycard even after you have the Secret Dossier, try befriending them so they’ll trust you enough to give you the keycard. If you choose to get the keycard from the Curio Shop Owner, it must be purchased from the Curio Shop’s Secret Inventory.

After obtaining the keycard, head back to the Secret Lab and open the door. The keycard will grant you access to the first level of the basement. There’s another door leading down to the next level of the basement, but it’s at the end of a hallway full of purple spores. Trying to pass through the spores will cause your Sim to collapse and wake up possessed for a period of time. You’ll need a hazmat suit to protect you from the spores if you want to make it to the end of the hallway unharmed and open the next door.

There is another room on this level of the basement with some chemical analyzers that are glowing red, which means you should probably hover over them. They’re important. Hovering over the analyzers informs you that you need to collect spore clusters to use the analyzers. You’ll need an Infection Scanner if you want to find spore clusters, which can be obtained from Military Personnel.

There’s nothing more for you to do here right now, so leave the Secret Lab and head back to StrangerVille.

About the author


A cranky old lady who prefers the company of cats and Sims over people. Occasionally peeks out from her lair long enough to chuck Sims articles at innocent bystanders.