HAL Protocol — Steam game overview
Stored observation / content update:
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.
Game metrics below are stored observations; missing values are unknown.
Revenue is modelled, not confirmed sales. See the methodology and uncertainty range.
| Statistic | Recorded value |
|---|---|
| Concurrent players | 0 |
| Total reviews | 1 |
| Positive reviews | 1 |
| Release date | Jun 23, 2025 |
| Price | 4.99 USD |
| Estimated gross revenue (low / central / high) | USD 32 / 88 / 245 |