HAL Protocol
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.
Last Updated: 10/2/2025
| Steam Price | $4.99 |
| Release Date | 6/23/2025 |
| Developer | The Last Semicolon Dev |
| Publisher | The Last Semicolon Dev |
| Steam App Id | 3726440 |
HAL Protocol
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.
Last Updated: 10/2/2025
- Windows
- Mac
- Linux
About HAL Protocol
HAL Protocol is an Indie, and Simulation game developed by The Last Semicolon Dev. On 6/23/2025, it was released on the Steam Store by The Last Semicolon Dev.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, HAL Protocol supports the following features:
- Playable without Timed Input
- Camera Comfort
- Stereo Sound
- Full controller support
- Steam Achievements
- Single-player
- Family Sharing
- Custom Volume Controls
From the Steam community, HAL Protocol has been tagged with the following user tags:
- Psychological
- Realistic
- 3D
- Walking Simulator
- Choices Matter
- First-Person
- Psychological Horror
- Linear
- Logic
- Simulation
- Sci-fi
- Indie
- Adventure
- Singleplayer
- Space
Media & Sceenshots
Watch the featured video for HAL Protocol and see the latest screenshots from the Steam Store.
Related Packages
HAL Protocol is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
| Name | Price | Actions |
|---|---|---|
| HAL Protocol | $4.99 | View |
Discover Similar Games
Find a new game to play just like HAL Protocol through our curated lists. Steambase uses Steam's User Tag and Genre system (and other game stats) to curate a list of the best and most loved games similar to HAL Protocol.
Genres
Features & Categories
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
HAL Protocol data has been sourced from:
- Valve Corporation. (2025, October 2). HAL Protocol on Steam. Steam Store.
- Valve Corporation. (2025, October 2). HAL Protocol. Steam Community Hub.