A survival stealth role-playing simulator where you experience the life of a rat in a suburban neighborhood.
User reviews:
Mixed (22 reviews) - 63% of the 22 user reviews for this game are positive.
Release Date: May 8, 2017

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We chose to launch in Early Access in order to get feedback from users and also because the game is not fully complete yet. Your suggestions will help us to make Rat Simulator a better game.”

Approximately how long will this game be in Early Access?

“We don't have a set date yet for how long Rat Simulator will be on Early Access, but we hope to finish the game by Late 2017.”

How is the full version planned to differ from the Early Access version?

“The full release will contain features and gameplay mechanics such as
  • Boss fights with humans
  • More maps
  • Female human characters
  • Side quests and side activity happening around the suburban neighborhood
  • Performance optimizations

What is the current state of the Early Access version?

“The current version of Rat Simulator is a playable build that contains most of the features that we have planned to include in the game.”

Will the game be priced differently during and after Early Access?

“The price for Rat Simulator during Early Access is $5.99 and it will increase to $9.99 USD after Early Access.”

How are you planning on involving the Community in your development process?

“We'll be looking closely at the steam community forums to look out for valuable feedback that'll help us to make a better game.”
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Recent updates View all (4)

July 19

Major Update - Beta Version 0.14

Beta version 0.14 is a big update that introduces major features. It should be ready in the main build in a few weeks time and Rat Simulator will be out of Early access after version 0.14 is released.

  • Boss Fights
  • Unique Voice Acting for every different human character
  • New game mechanics
  • Graphics settings optimizations

To access the beta build

Right click on Rat Simulator in your Steam Client and select Properties. From the Properties window, select Betas and type the beta access code ratsimulatortest to get access to the beta.

Next, select the beta branch 'testing - ' and restart steam to play Rat Simulator on the beta build.

Full Changelog
  • Added two bosses to the game
  • Added old legacy camera mode into options
  • You can now poison dogs
  • Added one more dog to one of the houses
  • Updated and retweaked house objectives
  • Added terrain boundaries to the edges of the map
  • Added rat traps in the game
  • Added disinfector mechanics for objectives
  • Added CCTV mechanics for objectives
  • Added unique voice acting line for both female and male humans
  • Increase pestman default chase speed in Normal & Easy difficulty
  • Add Graphics settings to options
  • Optimized default graphics settings
  • Throwing food now lures enemies
  • Fixed a bug with steam achievement only updating once the game exits
  • Increased rat throw force slighty
  • Adjusted fade in / fade out UI animations
  • Added missing text glyphs for other languages
  • Added upgrade SFX
  • Localized some minor UI text objects
  • Updated bar UIs in the game
  • Fixed a bug with upgrades double jump not working properly
  • Added prompt to lower difficulty if dying repeatedly
  • Fixed an occasional bug where the human AI will have multiple footstep audio playing at the same time
  • Add an indicator for the current infected house
  • Fixed localization text sizing issues & localization missing text characters

0 comments Read more

June 5

Improved Controls, Achievements & Trading cards - Version 0.13

Main Updates
  • Reworked and Improved Rat Controls
  • Added Female Humans into the game
  • Added Steam Achievements
  • Added Trading Cards
  • Added Dogs as guards in some houses

Other Updates
  • You can now poison Pestmans
  • You can now adjust mouse sensitivity under Options
  • Fixed a bug with UI buttons audio not scaling with SFX volume
  • Fixed a bug with humans sometimes walking through open doors
  • Opening & Closing doors no longer alerts the humans
  • Fixed a UI bug when standing on plaguespot
  • Fixed a UI bug where the damage UI effect does not cover the whole screen
  • You will now lose the game if there are not enough food for you to poison in the house
  • Added difficulty scaling for plague infection timer
  • Fixed a bug where the humans's walking animation won't play after transitioning from LookAround animation (scenario is getting fully detected by the human)
  • Humans now run further away once they detect you
  • Fixed a rotation bug with the dazed human when you poison them
  • Added dumpster & trashbin open/close sound effect
  • Added a new skybox
  • Fixed a bug where u can squeak while jumping

2 comments Read more
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About This Game

Rat Simulator is a survival stealth role-playing simulator game set in a suburban neighborhood where you play as a rat to spread the plague across the neighborhood in order to build a rat's paradise.

No longer do you need to wonder what they get up to when humans are around, as this state-of-the-art computer simulation models the complete rat experience. As a rat, you'll get to steal food, wreck havoc and create chaos whenever you feel like it. This terrifies the humans who fear you and will fight back by calling pestmen to exterminate you.

Mess is yours to make in this survival stealth role-playing simulator, as you experience the life of a hunted rat fighting to drive out those pesky humans!

Key Features

  • Infection - Infect 9 unique houses with the plague in the suburban neighborhood, but watch out for the inhabitants who are out to stop you in your tracks.
  • Stealth Gameplay – Avoid detection from humans while spreading the plague, else you'll feel the wrath of the pestmen who are out to kill you!
  • Destruction – Create chaos in the houses where you'll get to destroy precious objects such as plates, glasses and vases much to humanity’s dismay. Or maybe you just feel like making a mess out of their houses by throwing their fragile possessions everywhere.
  • Rat Paradise – Save rats who are trapped in houses and then call upon your fellow rats to infect new houses in the neighborhood!
  • Enhancements – Your experiences empowers your abilities and you'll get to select upgrades in order to boost your rat capabilities.
  • Poisoned Food – It's all fun to spread diseases to the humans, and after all you'll get the house to yourself if they die to the plague, right?
  • Annoy Humans – As a plague bearer, you'll get to temporarily stop the humans in their tracks as they drop to the ground when shot with poison.

System Requirements

    • OS: Windows 7+
    • Processor: 2.4 GHz Intel Core 2 Duo or equivalent AMD CPU
    • Memory: 4 GB RAM
    • Graphics: NVIDIA GeForce 760 GTX / AMD Radeon HD 5870 or equivalent videocard
    • Storage: 3 GB available space
    • Sound Card: DirectX compatible sound card
Customer reviews Learn More
Mixed (22 reviews)
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