Sublustrum speedrun guide: what is confirmed before the Q1 2027 release

No official Sublustrum speedrun categories exist yet. Here is what is confirmed about the game, its open playtest, and how to prepare early.

A Sublustrum speedrun is an appealing idea. The game is a first-person psychological puzzle adventure with sound-driven design and a memory-based setting, the kind of structure that rewards careful study. It is a complete reimagining of the 2008 cult classic known in the US as Outcry. Before anyone chases a time, though, it helps to separate what is confirmed from what is still unknown. The game has not been released yet. Its release window is Q1 2027, and no exact day has been announced.

Any Sublustrum speedrun plan you read about right now is guesswork. This guide covers what you can plan around today and what you should not assume.

What is confirmed right now

Sublustrum is an upcoming single-player psychological puzzle adventure from Brickworks Games, published by HypeTrain Digital. Only Chapter One is playable, through an open playtest on Steam that runs from October 12 to October 25. Those are the facts a runner can plan around today.

Topic	Confirmed	Not yet announced
Release	Q1 2027 window	Exact release day
Playable build	Chapter One in the open playtest	Full game structure
Mode	Single-player	Leaderboards or timed modes
Platforms	PC on Steam and a PS5 store listing	PS5 release date

For a Sublustrum speedrun to mean anything, a few things have to be settled publicly: a version of the game that everyone agrees to run, a start and end point for timing, and rules for what counts as a clean run. None of those have been set. The most useful thing you can do now is prepare habits that will carry over once the full game is out.

Why there are no speedrun categories yet

Official speedrun categories depend on public details that do not exist yet, such as a final build, the full game structure and an agreed timing method. Steam lists achievements, but an achievement list alone does not define a category. Runner rules usually form after players can test a complete game, so a Sublustrum speedrun category remains an open question. Treat any route, split or time you find online as a personal guess. The Sublustrum Steam store page is the best place to check for official updates.

What the open playtest gives you

The playtest runs from October 12 to October 25 and covers Chapter One only. To join, select Request Access on the Steam page. The playtest build includes a feedback survey, which is the most direct way to report what works and what does not.

The game is built around sound. Its puzzles ask you to tune frequencies and follow voices through static, and one location works as a vast musical instrument that must be played and tuned. Because of that, practice habits that suit most puzzle games do not fully apply here. Listening closely, noting which tones or voices you heard, and returning to a moment with fresh attention are better habits than memorizing screens. These are general practice habits, not confirmed game steps. No puzzle solutions are published here, and nothing in this guide describes a route through the game.

Use this checklist to prepare:

Step	Action	Why it matters
Check your PC	Compare your hardware with the Steam requirements	Minimum targets 720p at 30 FPS; recommended targets 1080p at 60 FPS
Join the playtest	Select Request Access on the Steam page before October 25	Gives you access to Chapter One and the feedback survey
Track updates	Watch the Steam page and the official website for news	The exact release day and PS5 date are still open

System requirements to plan around

Check your machine before you set up any Sublustrum speedrun practice. Steam lists two tiers of PC requirements, shown below. Your results will depend on your hardware, so compare your own PC against the recommended tier if smooth performance matters to your practice.

Component	Minimum	Recommended
Operating system	Windows 10 64-bit	Windows 11 64-bit
Processor	Intel Core i5-7400 or AMD Ryzen 5 1600	Intel Core i5-9600K or AMD Ryzen 5 3600
Memory and storage	8 GB RAM, 10 GB storage	12 GB RAM, 15 GB storage
Graphics and API	GeForce GTX 1060 3GB or Radeon RX 580 4GB, DirectX 11	GeForce RTX 2060 Super or Radeon RX 5700 or above, DirectX 12

Both tiers call for an SSD, which Steam describes as highly recommended. Keep your storage plan in mind too, since the recommended tier needs 15 GB.

Frequently Asked Questions

Q: Is there an official Sublustrum speedrun category yet?

No. The game is unreleased, and no speedrun categories, leaderboards or official timing rules have been announced. Release is planned for the Q1 2027 window, with no exact day set.

Q: Can I practice before the full release?

You can play Chapter One through the open playtest on Steam, which runs from October 12 to October 25. Nothing beyond Chapter One has been confirmed as playable at this time.

Q: Does Sublustrum have multiplayer or co-op runs?

No. Sublustrum is single-player and has no multiplayer. Any comparison of your Sublustrum speedrun attempts would be against your own earlier runs, since no shared leaderboard features are confirmed.

Q: What hardware should a Sublustrum runner aim for?

Start with the recommended PC specs, which target 1080p at 60 FPS. An SSD is highly recommended, and the recommended tier needs 15 GB of storage.