Game guide

Chained in Backrooms — How the fifteen levels are laid out

Chained in Backrooms

Musta and Alexander, Playing 1K, Rating 72.1%

Creator Musta and Alexander

Playing 1K

Rating 72.1%

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About

Overview

Chained in Backrooms is a co-op horror obby where up to eight players work through fifteen levels, solving puzzles, completing missions, and surviving against chained creatures. This guide walks you through how the levels are structured, what to expect at the big milestone moments, and how to reach both endings.

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What is on this page

Contents

01 How the fifteen levels are laid out Summary 02 Working with your teammates Tips 03 The boss at Level 11 Warn 04 The two endings and how to reach both Table 05 Free reward before you play Check 06 Glossary Words 07 Common questions FAQ

How the fifteen levels are laid out

Summary

In short The game runs from Level 1 to Level 15 in a straight line, with no skipping — you clear one level to unlock the next.

Each level you enter for the first time awards a badge, so you always have a clear record of how far you have gotten. Level 11 is the one point in the run where you face a named boss before you can continue. Level 15 is the last stage, and clearing it tips you into one of the two endings.

Levels 1–10 progressive stages, each awarding a first-entry badge

Level 11 boss stage where ENT-003 / Smilers must be defeated

Levels 12–14 final stretch through additional levels

Level 15 the last level, leads directly to Good Ending or Bad Ending

Good Ending one of two possible outcomes after finishing Level 15

Bad Ending the other possible outcome after finishing Level 15

Ask on the board

Working with your teammates

Tips

In short The game is built for groups of up to eight, and the missions and puzzles reflect that design.

The group has to stay coordinated. The game is a co-op, mission-based obby where players work together to survive against creatures, solve puzzles, and complete challenging missions.

Tips worth knowing

Talk through each mission before moving so everyone knows their role
Share puzzle information rather than solving everything solo

The boss at Level 11

Warn

In short You cannot move past Level 11 until ENT-003 / Smilers is defeated, so treat it as the run's defining checkpoint.

Every other level just asks you to enter and survive its challenges. Level 11 adds a concrete requirement: defeat the boss. The badge named ENT-3 BOSS only appears once ENT-003 / Smilers is beaten.

Worth watching out for

Skipping ENT-003 is not possible the game will not let you reach Level 12 until it is done

Earning the ENT-3 BOSS badge is confirmation you have cleared the requirement

The two endings and how to reach both

Table

In short Both endings have their own badge, so completionists have a reason to replay the game after reaching Level 15 the first time.

After Level 15 the run branches into either the Good Ending or the Bad Ending. Both are treated as legitimate outcomes with dedicated badges.

Good Ending	the orchestra in her bereavement outfit plays her melody
Bad Ending	did you see her face; the game asks you not to forget it

Free reward before you play

Check

In short Three quick actions on the game page and the Roblox group page unlock a free in-game reward at no cost.

The developers offer a free reward tied to three simple steps.

Join the Musta and Alexander group on Roblox
Hit the Like button on the game's Roblox page
Hit the Favorite button on the same page

Glossary

Backrooms: The horror setting behind the game — a sprawling, liminal space that serves as the backdrop for all fifteen levels.
Obby: Short for obstacle course, a Roblox genre built around physical challenges.
ENT-003 / Smilers: The boss creature at Level 11 that must be defeated before players can continue to Level 12.
Good Ending: One of the two outcomes that can follow clearing Level 15, marked by its own badge.
Bad Ending: The other possible outcome after Level 15, also recorded as its own badge on your profile.

Common questions

FAQ

How many players can join a session?

Up to eight players can take part in the missions together.

Is there any way to skip levels?

No. The game moves level by level in order, and your first-entry badge for each level reflects that.

Do I have to play through twice to get both ending badges?

The Good Ending and Bad Ending are separate outcomes at the end of Level 15, and each has its own badge.

What happens if I cannot beat the boss at Level 11?

You stay at Level 11 until ENT-003 / Smilers is defeated. The ENT-3 BOSS badge appears on your profile the moment the fight is won.

Updated Sep 30, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.

Chained in Backrooms Musta and Alexander, Playing 1K, Rating 72.1%

See the game page Ask on the board