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Game guide
24 Hours Overnight — First things to do when you load in
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About
Overview24 Hours Overnight is a co-op survival game where you and your friends build a base inside a store while dangerous employees and scary monsters roam the aisles each night. This guide covers how to get started, how to survive the nights, what to spend your gems on, and how to chase the game's badges.
What is on this page
Contents
01
First things to do when you load in
Step
02
Building a base that actually holds
Table
03
Live and upcoming events
Events
04
Surviving the night
Check
05
The Night Market and what to buy
Tips
06
Classes, badges, and long-term goals
Summary
07
Working codes
Codes
08
Playing without spending real money
Tips
09
Glossary
Words
10
Common questions
FAQ
01
First things to do when you load in
Step
In short
Sorting out codes and controls in the first minute saves you trouble later.
Before the first night hits, there are a few quick tasks worth doing. Getting your free gems early means you will have something to spend at the Night Market on Day 3. Sorting out your camera control also makes building and navigating the store a lot easier.
- Redeem your code open the code input form and enter the active code to collect free gems. Each code only works once per account.
- Enable Shift Lock press Ctrl to turn on Shift Lock. Your camera locks to your character and you get an aiming reticle.
- Scout the store walk around and visit different areas of the store. The Nomad badge rewards you for visiting all Plots, so exploring early doubles as badge progress.
02
Building a base that actually holds
TableIn short
Stone and metal walls are worth the extra effort because enemies tear through wood quickly.
Your base is the difference between surviving a night and losing everything. The store gives you several materials to build with, but they are not equal.
| Wood walls | enemies break them fastest |
| Stone walls | noticeably tougher than wood |
| Metal walls | the most durable option |
| Stairs and height | adding a second floor slows enemy progress and gives your team room to retreat |
03 Live and upcoming events
Events
いま開催中・開催予定のイベントです。期間が決まっているので先に確認しておきましょう。
04
Surviving the night
CheckIn short
A solid defensive structure and a clear escape route matter more than having the best weapon.
When night falls, dangerous employees and scary monsters start moving through the store. Run through this checklist before the night clock ticks over.
- Get to height fast if enemies break through stairs and upper floors buy you time
- Stay together the Team Player badge requires surviving 100 nights with a full team
Stuck? Try a video
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05
The Night Market and what to buy
Tips
In short
Save gems before Day 3 so you can grab Night Market items when the shop opens.
Starting on Day 3, a special shop called the Night Market appears during the night phase. It stocks items you cannot buy anywhere else. After Day 3 it comes back every couple of days. The Shopping Spree badge requires buying every item in the game, and the Laser Wars badges specifically require buying laser items.
Tips worth knowing
- The Portal Gun lets you move around the store and escape bad situations quickly
- The Gravity Gun lets you temporarily stop enemies in their tracks
- Laser items count toward the Laser Wars I and Laser Wars II badges
- Buying every available item across all shops is what unlocks the Shopping Spree badge
06
Classes, badges, and long-term goals
SummaryIn short
Most of the harder badges take many sessions, so treat them as long-term targets rather than Day 1 goals.
The game tracks your progress through eleven badges. Knowing what each one demands helps you make decisions during a run.
Pro badge
max out one class fully
Hacker badge
max out every class, not just one
Team Player badge
survive 100 nights with a full team
Hardcore badge
survive 100 nights without taking any damage at all
Infinite Stairwell badge
rescue Jeffy from the Infinite Stairwell and then survive 100 nights
Puzzle Master badge
activate every Pillar in the game
Plague Doctor badge
complete every trade the Plague Doctor offers
07 Working codes
Codes
NIGHT
free gems
free gems
REWORK
PRISON
08
Playing without spending real money
Tips
In short
Every core part of the game is free — gems just let you reach Night Market items sooner.
Base building, surviving nights, and co-op play all work without spending anything. The game also awards XP while you are offline, so your character keeps growing even when you are not actively playing.
Tips worth knowing
- Building and surviving are entirely free
- Offline XP accrues automatically, so logging out between sessions still moves your character forward
- The free code gems are a head-start on Night Market purchases
Glossary
Glossary- Night Market
- A special shop that appears during the night phase starting on Day 3, selling exclusive items such as the Portal Gun and Gravity Gun that are not available elsewhere.
- Shift Lock
- A camera mode activated by pressing Ctrl that locks the view to your character and adds an aiming reticle.
- Offline XP
- Experience points the game awards automatically even when you are logged out.
- Plot
- A distinct area of the store; visiting all of them is what the Nomad badge requires.
- Portal Gun
- A Night Market item that lets you create portals for fast movement and quick escapes.
- Gravity Gun
- A Night Market item that temporarily neutralises enemies.
- Pillar
- An interactive object in the store; activating all of them earns the Puzzle Master badge.
- Plague Doctor
- An in-game character who offers a series of trades; completing them all earns the Plague Doctor badge.
Common questions
FAQCan I play alone, or do I need a full team?
You can build a base and survive nights solo, but several badges specifically require a full team, such as the Team Player badge which requires surviving 100 nights with a full team.
An enemy is chasing me — what do I do?
Head for your stairs and get to the highest floor you can reach.
How do I earn gems without paying?
Redeeming the active code from the game's code input form gives you free gems immediately.
The Night Market showed up but I cannot afford anything — what now?
The Night Market returns every couple of days after Day 3, so you will get another chance.
What is the hardest badge to get?
Hardcore requires surviving 100 full nights without taking a single point of damage. The Hacker badge requires maxing out every class, not just one.
Updated Sep 15, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.
Game updates can change what is on this page. If you spot something, get in touch and let us know.
