Game overview
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 tracked players
- 0
- All-time peak
- Unavailable
- 24-hour change
- Unavailable
Delayed observation · last tracked . Values marked unavailable are not estimated.
About this game Read the full description
Something is wrong aboard the HIS 01 Echo.
Your shift is over. The return shuttle awaits you in Compartment 9. All you need to do is walk there… but the corridor keeps sending you back to the beginning.
A loop with no end.
At first glance, everything seems familiar — but look closer. With each cycle, something changes: a missing object, a wall in a different spot, equipment moved across the hall. The anomalies aren’t tiny — but they won’t always stand out. Spotting them is the only way forward.
HAL Protocol is a first-person narrative experience focused on observation, memory, and intuition. No enemies. No jumpscares. Just you, the ship, and a looping mystery to unravel.
There is no time limit. Take your time, explore at your pace, and move forward only when you're sure. If something’s off, turn back. If everything looks right, proceed. Choose wrong, and the loop resets.
Can you break the cycle? Or will you remain trapped in the quiet heart of the ship?
Media gallery 8 screenshots · 0 videos
Screenshots
Player activity
Concurrent players over the last 48 hours.
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System requirements Windows
Windows
Minimum
Minimum:- Requires a 64-bit processor and operating system
- OS: 10+
- Processor: i5-6600 or equivalent
- Memory: 8 GB RAM
- Graphics: GTX 1060 or equivalent
- DirectX: Version 11
- Storage: 5 GB available space
Recommended
Recommended:- Requires a 64-bit processor and operating system
Game details Languages, features & support
- Publisher
- The Last Semicolon Dev
- Brazilian rating
- l
- Steam Germany rating
- 0
- Achievements
- 2
- Controller support
- full
- Features
- Single-player, Steam Achievements, Full controller support, Camera Comfort, Custom Volume Controls, Playable without Timed Input, Stereo Sound, Family Sharing
- Languages
- English
- Support
- [email protected]
More analysis Activity patterns, updates & developer tools
Game Insights
Buy Verdict
Watch — $4.99.
Decent deal at 0% off, but might drop further. Watch for better opportunities.
▲
~12 days until next sale
Value Score
Great Value — 100th percentile.
Price-to-player ratio ranks in the 100th percentile.
▲
Market pricing tier
Genre Benchmarks
Value Ratio
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Developer Analytics
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Frequently Asked Questions
Is HAL Protocol worth buying right now?
Watch — $4.99. Decent deal at 0% off, but might drop further. Watch for better opportunities.
When does HAL Protocol go on sale?
Decent deal at 0% off, but might drop further. Watch for better opportunities.
Is HAL Protocol free to play?
HAL Protocol costs $4.99 on Steam.
What genre is HAL Protocol?
HAL Protocol is a Indie, Simulation game.
Who developed HAL Protocol?
HAL Protocol was developed by The Last Semicolon Dev and published by The Last Semicolon Dev.
What platforms does HAL Protocol support?
Available on Steam for Windows.