FIELD NOTES / OCTOBER 2026 PLAYTEST
Sublustrum. Find your way.
An unofficial guide to the Sublustrum remake. Chapter One is open for testing October 12–25, 2026. Start with verified playtest information and spoiler-light sound-puzzle guidance. Full release: Q1 2027; exact day unannounced.
CHOOSE YOUR NEXT STEP
A little direction. No unwanted spoilers.
Join the playtest
Steam access, dates and what Chapter One includes.
OpenExplore & interact
Prepare your session, keep useful notes and report a blocker.
OpenUnderstand the Echophone
Progressive guidance based on the developer’s feedback notes.
OpenCheck your PC
Official minimum and recommended hardware, with targets.
OpenThe latest verified field notes
Browse allguides
Sublustrum Beginner Guide: October Playtest Preparation
Prepare for Sublustrum’s October Steam playtest: version checks, exploration notes, sound feedback and useful bug reports without puzzle spoilers.
guides
Sublustrum Original vs Remake: Is It the Same as Outcry?
Separate the 2008 Sublustrum/Outcry original from the 3D remake: exploration, revised puzzles, music and why old solutions need verification.
puzzles
Sublustrum Echophone Hints: Understanding Device Feedback
Understand Sublustrum’s Echophone feedback with spoiler-light, progressive guidance grounded in developer notes for the October 2026 playtest.
updates
Sublustrum Playtest: Steam Access & October 12–25 Dates
Join the Sublustrum open playtest on Steam: October 12–25, 2026, Chapter One scope, access steps and official feedback links.
updates
Sublustrum Release Date: Q1 2027 & the 2026 Playtest
Steam now lists Sublustrum for Q1 2027. Separate the full remake’s release window from its October 2026 Chapter One open playtest.
updates
Sublustrum System Requirements: Official PC Targets
Check Sublustrum’s official minimum and recommended PC requirements, 720p/30 and 1080p/60 targets, storage, DirectX and SSD guidance.
The Sublustrum field guide
Each entry names its version, sources and verification date. Specific puzzle answers are published only when evidence supports them.
Sublustrum playtest essentials
The October 2026 opening chapter, separate from the full release.
- 1
Request access: Use Steam app 4151300; a wishlist alone does not enroll you.
- 2
Explore Chapter One: The public testing window is October 12–25, 2026.
- 3
Share your feedback: Use the survey linked in the game or official discussion channels.
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Sublustrum hints & version notes
Choose guidance before spoilers. Rebuilt puzzles deserve fresh verification.
- 1
Listen for feedback: The Echophone’s prompts and audio feedback were refined after the closed test.
- 2
Keep your notes close: Track what you observed before changing another mechanism.
- 3
Check the version: Outcry walkthroughs describe the 2008 original; they do not verify remake solutions.
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Return when you need a clue.
Read at your own pace. Our version labels and sources let you check what a guide actually establishes.