HAL Protocol overview

Overview

HAL Protocol comes from The Last Semicolon Dev and is published by The Last Semicolon Dev. It arrived on Steam on Jun 23, 2025, and it sits naturally among Single-player, Steam Achievements, Full controller support, Camera Comfort, Custom Volume Controls, Playable without Timed Input, Stereo Sound, and Family Sharing. SteamPulse tracks it across Windows and Steam so readers get a quick useful snapshot, not just a wall of numbers.

Players and reviews

HAL Protocol's latest SteamPulse observation recorded 0 players at 22 September 2026 - 03:03:27 UTC, with a tracked peak near 1. This peak is the highest value in the available SteamPulse record and may not include activity before tracking began. Player reaction is 100% positive across 1 reviews.

Language and system requirements

HAL Protocol is available in 1 languages including:

3 regional rating boards including dejus, steam germany, and igrs

Sales, recommendations, and streams

HAL Protocol has no public VGI unit-sales estimate available and has recommendation data pending. Revenue data is not available for this game yet. On Twitch, 0 streamers are live with around 0 total watchers.

HAL Protocol overview details

HAL Protocol combines live player counts with reviews, pricing, platform support, Store metadata, dated player history, media, recent news, and related games.

Steam Store 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?

SteamPulse editorial summary

HAL Protocol is listed as a game with $4.99. It supports Windows, belongs to Single-player, Steam Achievements, Full controller support, Camera Comfort, Custom Volume Controls, Playable without Timed Input, Stereo Sound, and Family Sharing, and is associated with Indie and Simulation. SteamPulse's latest observation records 0 players at 22 September 2026 - 03:03:27 UTC, a tracked peak of 1, and 100% positive reviews.

Highlighted achievements

Support and legal notes

Real questions answered from SteamPulse data, including live players, monthly momentum, review sentiment, regional audience signals, Twitch activity, and current Steam pricing.