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Game guide

Rat Lab — The three roles and what they ask of you

Rat Lab 🧪 [UPD]
Evil Science, Playing 2.4K, Rating 71.6%
Creator Evil Science
Playing 2.4K
Rating 71.6%
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About

Overview

Rat Lab is an asymmetric Roblox game where every player picks one of three roles — Lab Rat, Scientist, or Security — and each role has a completely different goal. This guide walks through what each role actually does, how to unlock tools faster, and what it takes to earn all six badges.

What is on this page

Contents
01

The three roles and what they ask of you

Table
In short Picking your role is the first and most important decision you make each session.

Every player joins a side at the start of a session, and that choice shapes everything — your goal, your tools, and who you are working against.

Lab Ratescape the lab by clearing all three stages, using any route you can find
Scientistrun experiments on live Lab Rats and document mutations they produce
Securitychase down escaping rats and return them to a closed cell
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02

Playing as a Lab Rat

Step
In short Clearing all three stages and reaching the outside is the Lab Rat's ultimate goal.

As a Lab Rat you are always moving forward, looking for ways past each stage. The bite action is one of the key tools for opening new paths — it lets you chew straight through a wall instead of going around it. Reach the outside after all three stages and you earn the Out of the Lab badge.

  1. Enter the lab just showing up for the first time earns you the Test Subject badge
  2. Use the bite chew through a wall to open a shortcut and earn the Through the Wall badge at the same time
  3. Clear all three stages reaching the outside after all three grants Out of the Lab
03

Playing as a Scientist

Tips
In short Scientists earn their rarest badge by logging a mutation that no other player has recorded yet.

Scientists create mutations and test them on Lab Rats. Running your very first experiment on a live subject earns the For Science badge. The harder badge, New Specimen, requires you to log a mutation that nobody else has documented before — repeat mutations do not count.

Tips worth knowing
  • Run at least one experiment on a live subject to unlock the For Science badge
  • A mutation already in the records will not trigger New Specimen, so vary what you create
04

Playing as Security

Step
In short Security wins by getting escapees back into a closed cell — chasing alone is not enough.

Security's job is to stop rats before they get out and to retrieve any that have already escaped. The Caught One badge requires the full cycle: chase, capture, and return the rat to a closed cell.

  1. Chase any rat that breaks out
  2. Return them to a closed cell physically bringing a captured rat back into a closed cell is what completes the Caught One badge
05

Tool unlocks and the session timer

Warn
In short Leaving the game resets your unlock timer to zero.

New tools unlock the longer you stay in a single session. The moment you leave and rejoin, that timer resets completely.

Worth watching out for
Your play-time counter resets every time you leave the game
Staying in the same session is the only way to keep your timer climbing toward later unlocks
06

All six badges

Table
In short Every badge is tied to a specific role and a specific action.

Each badge has one clear unlock condition.

BadgeRoleHow to unlock
Test SubjectLab RatEnter the lab for the first time
Through the WallLab RatChew through a wall using the bite action
Out of the LabLab RatClear all three stages and reach the outside
For ScienceScientistRun your first experiment on a live subject
New SpecimenScientistLog a mutation that no player has recorded before
Caught OneSecurityRecapture an escaped rat and return them to a closed cell

Glossary

Glossary
Lab Rat
The role focused on escaping the lab by clearing three stages.
Bite
An action available to Lab Rats that lets them chew through a wall to create a new path.
Cell
The enclosed room where rats are held; Security must return captured rats here.
Mutation
A variation that Scientists create and test on Lab Rats during experiments.
Session
The stretch of time from when you join the game to when you leave; your tool-unlock timer resets at the end of every session.

Common questions

FAQ

Why did my tools disappear when I rejoined?

Tool unlocks are tied to how long you have been in a single session. Leaving the game resets that timer to zero. Stay in the same session as long as you can to keep them.

How do I get the New Specimen badge?

Play as a Scientist and log a mutation that no other player has recorded before. If the mutation is already in the records, it will not count.

Updated Oct 9, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.
Rat Lab 🧪 [UPD] Evil Science, Playing 2.4K, Rating 71.6%
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