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HAL Protocol

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App ID 3726440
App Type Game
Developer
Publisher The Last Semicolon Dev
Supported Systems Windows
Technologies Unity Engine
Last Changenumber 29901938
Last Record Update 4 July 2025 – 17:12:33 UTC ()
Release Date 23 June 2025 – 17:25:50 UTC ()
❓ 59.42%
1 reviews
0
In-Game

Your shift aboard the HIS 01 Echo is finally over. The return shuttle awaits you in Compartment 9. All that's left is to walk there. But the corridor to Compartment 9 loops endlessly. Each time, something shifts. Uncover the mystery. Escape the impossible.

Additional Information

Developer The Last Semicolon Dev
controller_support full
community_visible_stats Yes
ReleaseState released
Publisher The Last Semicolon Dev
Store Release Date 23 June 2025 – 17:25:53 UTC ()
osarch 64
community_hub_visible Yes
Primary Genre Indie (23)
Store Genres Indie (23), Simulation (28)
Steam Release Date 23 June 2025 – 17:25:50 UTC ()
Store Asset Modification Time 29 May 2025 – 11:42:32 UTC () (1748518952)
library_assets
library_capsuleen
library_heroen
library_hero_bluren
library_logoen
library_headeren
logo_position ↴
pinned_positionBottomLeft
width_pct50
height_pct61.26487011410536
osextended empty string
Detected Technologies (?) Unity Engine, UnityBurst SDK, UnityIL2CPP SDK
controllertagwizard Yes
First seen on SteamDB 6 May 2025 – 10:07:03 UTC (), in changelist #28838939

Supported Languages

1 Languages Interface Full Audio Subtitles
English Yes

Tags

🖥️ Simulation 🚶 Walking Simulator 🕴 Psychological Horror 🙌 First-Person 🧞 Choices Matter 🫂 Psychological 🌱 Realistic 🧩 Logic 🗺️ Adventure 🧊 3D 🌱 Indie 🌠 Space 🚀 Sci-fi 📏 Linear 👤 Singleplayer

Categories

Single-player Steam Achievements Family Sharing Steam is learning

Hardware Categories

Full Controller Support

Accessibility Categories

Camera Comfort Custom Volume Controls Stereo Sound Playable without Timed Input

Assets

Load all asset images
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small_capsule
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header_image
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library_assets_full
library_capsule ↴
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image2x/englishdd883fa98318556a1948fe6bef9b4493d09f2c80/library_600x900_2x.jpg
library_hero ↴
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library_hero_blur ↴
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library_logo ↴
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image2x/english7c79a2606aefce7726cb918c8c2850d865f0f008/logo_2x.png
logo_position/pinned_positionBottomLeft
logo_position/width_pct50
logo_position/height_pct61.26487011410536
library_header ↴
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Assets
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small_capsuleb0cea3391bff22eca925d8bb4511e48ef4dd6264/capsule_231x87.jpg
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library_hero171a7f7f752307e5691dbd67184091ea631dc6a8/library_hero.jpg
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community_icon66a762665d418a15acf1550ff21ce52a952f69ca.jpg
page_background_pathapp/3726440
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timestamp23 June 2025 – 17:25:51 UTC
Trailers
257136628 ↴
trailer_nameHAL Protocol Trailer
trailer_category3
trailer_480p/video/webm257136628/movie480_vp9.webm
trailer_480p/video/mp4257136628/movie480.mp4
trailer_max/video/webm257136628/movie_max_vp9.webm
trailer_max/video/mp4257136628/movie_max.mp4
microtrailer/video/webm3726440/753823053/ee8daaeb1ae7ea4ccae1396f15e921d78b5ec0cc/1750394329/microtrailer.webm
microtrailer/video/mp43726440/753823053/ee8daaeb1ae7ea4ccae1396f15e921d78b5ec0cc/1750394329/microtrailer.mp4
screenshot_medium257136628/cfa031bf78cbdb630118be05dccf61c45ca9f393/movie_600x337.jpg
screenshot_full257136628/cfa031bf78cbdb630118be05dccf61c45ca9f393/movie_full.jpg
trailer_base_id886696
all_agestrue
is_highlighttrue
timestamp1747249134

Depots

ID Configuration Size DL.
3726441 4.60 GiB 403.14 MiB

Total size on disk is 4.60 GiB and total download size is 403.14 MiB.

Branches

Name Description Build ID Time Updated
public 18502485 17 May 2025 – 12:26:22 UTC
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