41 Hours: Prologue

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App ID	1536830
App Type	Game
Developer	Texelworks
Publisher	ValkyrieInitiative
Supported Systems	Windows
Technologies	Unreal Engine
Last Changenumber	29915425
Last Record Update	6 July 2025 – 03:10:29 UTC ()
Release Date	19 March 2021 – 17:00:06 UTC ()

❓ 56.31%

75 reviews

In-Game

41 Hours is a first-person shooter dramatic game that follows the narrative of Ethan, a workaholic scientist in search of his long-lost wife. This is a one-hour prologue of the incredible, action-packed journey.

Additional Information

This game is excluded from Steam Family Sharing because: Free Game

Developer

Texelworks

community_visible_stats

Yes

ReleaseState

released

Publisher

ValkyrieInitiative

IsFreeApp

Yes

Exclude from family sharing (exfgls)

3 (Free Game)

Store Release Date

19 March 2021 – 17:00:06 UTC ()

osarch

community_hub_visible

Yes

Social Media

https://discord.gg/EHpmDauaAv

Primary Genre

Action (1)

Store Genres

Action (1)

Steam Release Date

19 March 2021 – 17:00:06 UTC ()

Store Asset Modification Time

1 March 2021 – 19:47:14 UTC () (1614628034)

library_assets

library_capsule	en
library_hero	en
library_logo	en
logo_position ↴
pinned_position	BottomCenter
width_pct	66.97416585041668
height_pct	49.35816248449828

osextended

empty string

Is free on the store?

Yes

review_score

review_percentage

Detected Technologies (?)

Unreal Engine, NVIDIA_APEX SDK, NVIDIA_Nsight_Aftermath SDK, NVIDIA_PhysX SDK, NvCloth SDK, OculusXRPlugin SDK, Ogg SDK, OpenVR SDK, Vorbis SDK

Steam Deck Compatibility

Steam Deck:
Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
Some in-game text is small and may be difficult to read
This game's default graphics configuration performs well on Steam Deck
SteamOS:
This game runs successfully on SteamOS
Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
category: Playable
steamos_compatibility: Compatible
test_timestamp: 27 June 2025 – 00:00:00 UTC
tested_build_id: 6808986

configuration:

supported_input	gamepad
requires_manual_keyboard_invoke	0
requires_non_controller_launcher_nav	0
primary_player_is_controller_slot_0	0
non_deck_display_glyphs	1
small_text	1
requires_internet_for_setup	0
requires_internet_for_singleplayer	0
recommended_runtime	proton-9.0-4RC
requires_h264	0
requires_voice_files	0
gamescope_frame_limiter_not_supported	0
hdr_support	0

Content Descriptors

Frequent Violence or Gore (2), General Mature Content (5)

First seen on SteamDB

26 January 2021 – 17:41:41 UTC (), in changelist #10570920

Content Descriptors (Including DLC)

Frequent Violence or Gore (2), General Mature Content (5)

Supported Languages

3 Languages	Interface	Full Audio	Subtitles
English	Yes	Yes	Yes
Russian	Yes		Yes
Simplified Chinese	Yes		Yes

Assets

Load all asset images

clienticon

377bfb5ec1757e7888a8213a39901a840ec21dc3

clienttga

e6c1d0f729fd236dd1e843b3e1c50589c2996c0a

icon

6bebc602c66a77ba2ca0a8113ad60a4a30e010bf

logo

b45d1820c7d85d8d3a401c652b3ee30efd4cfcc1

logo_small

b45d1820c7d85d8d3a401c652b3ee30efd4cfcc1_thumb

small_capsule

english

capsule_231x87.jpg

header_image

english

header.jpg

library_assets_full

library_capsule ↴
image2x/english	library_600x900_2x.jpg
image/english	library_600x900.jpg
library_hero ↴
image/english	library_hero.jpg
library_logo ↴
logo_position/pinned_position	BottomCenter
logo_position/width_pct	66.97416585041668
logo_position/height_pct	49.35816248449828
image/english	logo.png

Assets

main_capsule	capsule_616x353.jpg
small_capsule	capsule_231x87.jpg
header	header.jpg
page_background	page_bg_generated_v6b.jpg
hero_capsule	hero_capsule.jpg
library_capsule	library_600x900.jpg
library_capsule_2x	library_600x900_2x.jpg
library_hero	library_hero.jpg
community_icon	6bebc602c66a77ba2ca0a8113ad60a4a30e010bf.jpg
page_background_path	app/1536830
raw_page_background	page_bg_raw.jpg
timestamp	13 April 2022 – 15:12:29 UTC

Trailers

350988 ↴
trailer_name	1
trailer_category	0
trailer_480p/video/webm	256824169/movie480_vp9.webm
trailer_480p/video/mp4	256824169/movie480.mp4
trailer_max/video/webm	256824169/movie_max_vp9.webm
trailer_max/video/mp4	256824169/movie_max.mp4
microtrailer/video/webm	1536830/350988/1d3795840e617cef13539091e486f353293a922a/1751000104/microtrailer.webm
microtrailer/video/mp4	1536830/350988/1d3795840e617cef13539091e486f353293a922a/1751000104/microtrailer.mp4
adaptive_trailers/0/cdn_path	1536830/350988/1d3795840e617cef13539091e486f353293a922a/1751000104/dash_av1.mpd
adaptive_trailers/0/encoding	dash_av1
adaptive_trailers/1/cdn_path	1536830/350988/1d3795840e617cef13539091e486f353293a922a/1751000104/dash_h264.mpd
adaptive_trailers/1/encoding	dash_h264
adaptive_trailers/2/cdn_path	1536830/350988/1d3795840e617cef13539091e486f353293a922a/1751000104/hls_264_master.m3u8
adaptive_trailers/2/encoding	hls_h264
screenshot_medium	256824169/movie.293x165.jpg
screenshot_full	256824169/movie_full.jpg
all_ages	true
is_highlight	true
timestamp	1614620378

Depots

ID	Configuration	Size	DL.
228988	Windows Shared InstallDepot from 228980VC 2019 Redist	No size
228990	Windows Shared InstallDepot from 228980DirectX Jun 2010 Redist	No size
1536831	41 Hours: Prologue Content	15.80 GiB	5.61 GiB

Total size on disk is 15.80 GiB and total download size is 5.61 GiB.

Branches

Name	Description	Build ID	Time Updated
public		6808986	3 June 2021 – 20:51:48 UTC

41 Hours: Prologue

Additional Information

Supported Languages

Tags

Categories

Assets

Depots

Branches