Charts Sales Upcoming Patches Events Calculator

New on SteamEvery app, DLC and depot the minute Steam creates it AppsEvery app on Steam, newest change first PackagesSubs and bundles, and what each contains DepotsDepots, manifests and install sizes TagsSteam's user tags and the games under them Developers & publishersCompanies and their catalogues TechnologiesEngines, SDKs and anti-cheat found in the files Change historyEvery PICS changelist as it lands

SignalsNineteen readings of the whole catalogue CompareAny games side by side RecordsAll-time peaks and the days they were set ReportsWeekly and monthly write-ups Alerts & newsroomWatch a game, get told when it moves Steam statusIs Steam up, right now Web API explorerTry the endpoints in the browser

EventsSteam's own events and the sales calendar CalculatorWhat a Steam account is worth, and its pile of shame

/

Sign in

/

SteamPeaks

The ultimate resource for Steam data.

ExploreCharts Sales Sales and fests Upcoming Patches Events Records Trending Signals

DatabaseApps Packages Depots Tags Developers Technologies Change history

ToolsCalculator Compare Search Alerts Steam status API

SiteMethodology FAQ Discord Support Sign in via Steam

Not affiliated with Valve or Steam. Game names and artwork belong to their owners. All times UTC.

Privacy Cookies Fair use Status

Backrooms Lost Unit Update History · SteamPeaks

Apps Backrooms Lost UnitUpdate history

Backrooms Lost Unit

GameApp ID 4,279,040by JD ArchivesReleased 21 May 2026

WindowsEngine —

Exploration First-Person 3D Horror Psychological Horror Action +11 +13

View on SteamSteam

Data

Price history Charts Patches Events Reviews Audience Estimates Availability

Technical

Metadata Packages DLC Depots1 Requirements Install size Configuration Cloud saves

Content

Achievements Community Media Related apps

History

Update history Store history

Everything

Update history Overview Price history Charts Patches Events Reviews Audience Estimates Availability Metadata Packages DLC Depots1 Requirements Install size Configuration Cloud saves Achievements Community Media Related apps Store history Full details

Update history

A permanent record of every observed change.

Export

Export current results

CSV spreadsheet JSON data

All changes Changelists Builds Store Achievements

App ID4,279,040

Release date21 May 2026

Engine—

Install size8.95 GB

TypeGame

Last update3 Sep 2026

Steam DeckUnknown

DLC0

DeveloperJD Archives

Changenumber38,679,122

Price$6.99

Packages0

PublisherJD Archives

SystemsWindows

Followers—

Depots1

Compare this game

Backrooms Lost Unit

JD Archives
Released 21 May 2026·App 4279040

Steam user reviews

Mostly Positive

79.2%· 53 reviews

Recent Very Positive · 90%

SteamPeaks Rating

70.0 Positive

Recent 30 days 59.6

Playing now

2

+2 vs. yesterday

15%of peak

All-time peak

13

Jul 2026

Updated 12 Sep 2026, 16:23 UTCData by SteamPeaks.com

Showing keys matching the filter · 1 event on this page has no match

Time (UTC)SourceWhat changedAddedEditedRemovedReference

Nothing recorded for this filter. Clear filters

Showing 0 of 1 events·All events loaded