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Lost In The Backrooms: Day 100

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App ID 3964500
App Type Game
Developer
Publisher Rough devs
Supported Systems Windows
Last Changenumber 32030011
Last Record Update 1 November 2025 – 18:36:05 UTC ()
Release Date 30 October 2025 – 18:01:17 UTC ()
❓ 64.08%
2 reviews
0
In-Game
+2
🗺️ Adventure 💥 Action 🧊 3D 🍿 Cinematic 🌱 Realistic

Lost in the backrooms day 100 is a co-op horror game based on the concept of the backrooms with different levels and entities , a sanity system and unreal engine 5 graphics for the best immersive experience.

Steam price history

Introductory Offer, ends 13 November 2025
Current Price -10% $7.19
Lowest Recorded Price $7.19 at -10% 30 October 2025
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar -10% $7.19 $7.19 $7.19 $7.19 at -10%
Russian Ruble -10% 288 ₽ $3.58 -50.17% $3.58 288 ₽ at -10%
Kazakhstani Tenge -10% 2070₸ $3.92 -45.47% $3.92 2070₸ at -10%
Vietnamese Dong -10% 103500₫ $3.93 -45.30% $3.93 103500₫ at -10%
Indonesian Rupiah -10% Rp 66600 $4.00 -44.33% $4.00 Rp 66600 at -10%
Ukrainian Hryvnia -10% 168₴ $4.00 -44.31% $4.00 168₴ at -10%
LATAM - U.S. Dollar -10% $4.04 $4.04 -43.81% $4.04 $4.04 at -10%
MENA - U.S. Dollar -10% $4.04 $4.04 -43.81% $4.04 $4.04 at -10%
South Asia - USD -10% $4.04 $4.04 -43.81% $4.04 $4.04 at -10%
Indian Rupee -10% ₹ 360 $4.05 -43.60% $4.05 ₹ 360 at -10%
Chinese Yuan -10% ¥ 29.70 $4.17 -41.96% $4.17 ¥ 29.70 at -10%
Philippine Peso -10% ₱247.45 $4.21 -41.36% $4.21 ₱247.45 at -10%
South African Rand -10% R 73.80 $4.24 -40.91% $4.24 R 73.80 at -10%
Taiwan Dollar -11% NT$ 136 $4.41 -38.58% $4.41 NT$ 136 at -11%
Brazilian Real -10% R$ 23,84 $4.43 -38.31% $4.43 R$ 23,84 at -10%
Saudi Riyal -10% 16.65 SR $4.43 -38.26% $4.43 16.65 SR at -10%
Chilean Peso -10% CLP$ 4230 $4.48 -37.56% $4.48 CLP$ 4230 at -10%
CIS - U.S. Dollar -10% $4.49 $4.49 -37.55% $4.49 $4.49 at -10%
Malaysian Ringgit -10% RM19.57 $4.66 -35.16% $4.66 RM19.57 at -10%
Kuwaiti Dinar -10% 1.48 KD $4.84 -32.59% $4.84 1.48 KD at -10%
Mexican Peso -10% Mex$ 90.89 $4.89 -31.90% $4.89 Mex$ 90.89 at -10%
Colombian Peso -10% COL$ 18900 $4.90 -31.76% $4.90 COL$ 18900 at -10%
Qatari Riyal -10% 17.99 QR $4.94 -31.16% $4.94 17.99 QR at -10%
Thai Baht -10% ฿161.10 $4.99 -30.47% $4.99 ฿161.10 at -10%
Peruvian Sol -10% S/.17.10 $5.06 -29.50% $5.06 S/.17.10 at -10%
Japanese Yen -10% ¥ 828 $5.37 -25.21% $5.37 ¥ 828 at -10%
South Korean Won -10% ₩ 8010 $5.60 -22.03% $5.60 ₩ 8010 at -10%
Uruguayan Peso -10% $U224 $5.61 -21.86% $5.61 $U224 at -10%
U.A.E. Dirham -10% 21.60 AED $5.88 -18.20% $5.88 21.60 AED at -10%
Singapore Dollar -10% S$7.65 $5.88 -18.11% $5.88 S$7.65 at -10%
Hong Kong Dollar -10% HK$ 46.80 $6.02 -16.27% $6.02 HK$ 46.80 at -10%
New Zealand Dollar -10% NZ$ 10.61 $6.06 -15.67% $6.06 NZ$ 10.61 at -10%
Canadian Dollar -10% CDN$ 9.44 $6.71 -6.58% $6.71 CDN$ 9.44 at -10%
Costa Rican Colon -10% ₡3375 $6.72 -6.49% $6.72 ₡3375 at -10%
Australian Dollar -10% A$ 10.61 $6.94 -3.43% $6.94 A$ 10.61 at -10%
Norwegian Krone -10% 80,10 kr $7.91 +10.06% $7.91 80,10 kr at -10%
British Pound -10% £6.02 $7.91 +10.14% $7.91 £6.02 at -10%
Euro -10% 7,01€ $8.12 +13.03% $8.12 7,01€ at -10%
Israeli New Shekel -10% ₪26.55 $8.16 +13.51% $8.16 ₪26.55 at -10%
Polish Zloty -10% 33,29zł $9.02 +25.57% $9.02 33,29zł at -10%
Swiss Franc -10% CHF 8.09 $10.04 +39.74% $10.04 CHF 8.09 at -10%
Valve suggested prices are shown on package pages.

Price history

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View lowest recorded prices on Steam store pages by using our browser extension.

Additional Information

Developer Rough devs
community_visible_stats Yes
ReleaseState released
Publisher Rough devs
Store Release Date 30 October 2025 – 18:01:17 UTC ()
osarch 64
community_hub_visible Yes
Social Media https://discord.gg/CdgtcwcxWe
https://www.tiktok.com/@rough_devs
https://www.youtube.com/@Rough_Devs
Primary Genre Indie (23)
Store Genres Action (1), Adventure (25), Indie (23), Early Access (70)
Store Asset Modification Time 1 October 2025 – 13:18:35 UTC () (1759324715)
library_assets
library_capsuleen
library_heroen
library_hero_bluren
library_logoen
library_headeren
logo_position ↴
pinned_positionBottomLeft
width_pct100
height_pct100
osextended empty string
deckresolutionoverride Default
controllertagwizard Yes
Early Access Release Date 30 October 2025 – 00:00:00 UTC ()
First seen on SteamDB 17 August 2025 – 13:42:30 UTC (), in changelist #30636613

Supported Languages

1 Languages Interface Full Audio Subtitles
English Yes Yes

Assets

Load all asset images
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icon 50af68420c32420fcdd1b37545bedd325f2d13e3
small_capsule
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header_image
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library_assets_full
library_capsule ↴
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image2x/englishb170079108c9fb63f211d68e027423cbc270c1e3/library_capsule_2x.jpg
library_hero ↴
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library_hero_blur ↴
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library_logo ↴
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logo_position/pinned_positionBottomLeft
logo_position/width_pct100
logo_position/height_pct100
library_header ↴
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image2x/englishad38c7f4a5c056f975a61810203a71271592bb98/library_header_2x.jpg
Assets
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small_capsule6e46d9499b79e7d4f0b8d90e98e46abf8021ab7b/capsule_231x87.jpg
headerad38c7f4a5c056f975a61810203a71271592bb98/header.jpg
hero_capsuleba35ab0390eabd2a08bffe7bada4a5f03508063d/hero_capsule.jpg
hero_capsule_2xba35ab0390eabd2a08bffe7bada4a5f03508063d/hero_capsule_2x.jpg
library_capsuleb170079108c9fb63f211d68e027423cbc270c1e3/library_capsule.jpg
library_capsule_2xb170079108c9fb63f211d68e027423cbc270c1e3/library_capsule_2x.jpg
library_hero2c4d9f8efce39e5e8948560d1a0a8955e8575af9/library_hero.jpg
library_hero_2x2c4d9f8efce39e5e8948560d1a0a8955e8575af9/library_hero_2x.jpg
community_icon50af68420c32420fcdd1b37545bedd325f2d13e3.jpg
page_background_pathapp/3964500
timestamp30 October 2025 – 18:01:15 UTC

Trailer 968796 ↴

trailer_name Lost in the backrooms: Day 100 Trailer
trailer_category 3
trailer_480p ↴
video/webm 257191655/movie480_vp9.webm
video/mp4 257191655/movie480.mp4
trailer_max ↴
video/webm 257191655/movie_max_vp9.webm
video/mp4 257191655/movie_max.mp4
microtrailer ↴
video/webm 3964500/285816340/54c4c8f596325efd31190defb6cba8491fe28af4/1756723112/microtrailer.webm
video/mp4 3964500/285816340/54c4c8f596325efd31190defb6cba8491fe28af4/1756723112/microtrailer.mp4
adaptive_trailers ↴
dash_av1 3964500/285816340/54c4c8f596325efd31190defb6cba8491fe28af4/1756723112/dash_av1.mpd
dash_h264 3964500/285816340/54c4c8f596325efd31190defb6cba8491fe28af4/1756723112/dash_h264.mpd
hls_h264 3964500/285816340/54c4c8f596325efd31190defb6cba8491fe28af4/1756723112/hls_264_master.m3u8
screenshot_medium 257191655/17e4009729aababa954a1c619cfd61ba1032f070/movie_600x337.jpg
screenshot_full 257191655/17e4009729aababa954a1c619cfd61ba1032f070/movie_full.jpg
all_ages true
is_highlight true
timestamp 10 September 2025 – 11:17:21 UTC
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