Status
SteamPeaks
ChartsSalesUpcomingPatchesNewsCalculator
New on SteamEvery app, DLC and depot the minute Steam creates itAppsEvery app on Steam, newest change firstPackagesSubs and bundles, and what each containsDepotsDepots, manifests and install sizesTagsSteam's user tags and the games under themDevelopers & publishersCompanies and their cataloguesTechnologiesEngines, SDKs and anti-cheat found in the filesChange historyEvery PICS changelist as it lands
SignalsNineteen readings of the whole catalogueCompareAny games side by sideRecordsAll-time peaks and the days they were setReportsWeekly and monthly write-upsAlerts & newsroomWatch a game, get told when it movesSteam statusIs Steam up, right nowWeb API explorerTry the endpoints in the browser
NewsSteam's own announcements and the sales calendarCalculatorWhat a Steam account is worth, and its pile of shame
/
Sign in
/
SteamPeaks
The ultimate resource for Steam data.
ExploreChartsSalesSales and festsUpcomingPatchesNewsRecordsTrendingSignals
DatabaseAppsPackagesDepotsTagsDevelopersTechnologiesChange history
ToolsCalculatorCompareSearchAlertsSteam statusAPI
SiteMethodologyFAQDiscordSupportSign in via Steam
Not affiliated with Valve or Steam. Game names and artwork belong to their owners. All times UTC.
PrivacyCookiesFair useStatus
Sublustrum PlaytestNewsThe Closed Sublustrum Playtest Is Live Right Now!
Steam news

The Closed Sublustrum Playtest Is Live Right Now!

Sublustrum Playtest · published 7 Sep 2026, 13:00 UTC

All newsPlayers around this dateRead on Steam

The closed Sublustrum playtest is live! 

The playtest will run until September 14. During the test, you’ll have access to a demo version of Sublustrum featuring the first part of the game — explore the environment, search for clues, solve puzzles, and begin unraveling the mystery that sets the story in motion.

Please note: access to the playtest is available to a limited number of participants. If you previously requested access on Steam, make sure to check whether Sublustrum Playtest is already available for you to install.

What we want to learn

For us, this playtest is a chance to see the first gameplay experience through your eyes. We’re especially interested in:

  • how comfortable exploration and interaction with the environment feel;

  • how clear and well-balanced the puzzles are;

  • how the story, pacing, and sense of mystery come across;

  • how the visuals, music, and atmosphere work together;

  • how stable the game is and whether you encounter any technical issues.

And, of course, we want to know the most important thing: how the experience made you feel, and whether it left you wanting to discover what happens next.

After finishing the playtest, you’ll need to complete a short feedback form. Playtest participants will find the link directly in the game.

Share your feedback

Join our Discord server to discuss the playtest with other participants, share your impressions and feedback, and report any bugs or technical issues you encounter.

System Requirements

Minimum — 720p / 30 FPS

  • Windows 10 64-bit

  • Intel Core i5-7400 / AMD Ryzen 5 1600

  • 8 GB RAM

  • GeForce GTX 1060 3 GB / Radeon RX 580 4 GB

  • DirectX 11

  • 10 GB available space

  • SSD strongly recommended

Recommended — 1080p / 60 FPS

  • Windows 11 64-bit

  • Intel Core i5-9600K / AMD Ryzen 5 3600

  • 12 GB RAM

  • GeForce RTX 2060 Super / Radeon RX 5700 or better

  • DirectX 12

  • 15 GB available space

  • SSD strongly recommended

Thank you to everyone who joined the playtest. We’re looking forward to hearing your thoughts and feedback! 

More from Sublustrum Playtest

Other announcements

All news
Steam news27 Aug 2026Sublustrum Playtest Starts September 4What secrets does the Flickering World hold? Soon, you’ll be able to start searching for the answers yourself. The Sublustrum playtest begins on September 4. For the first time, we’re inviting players to step into the Flickering World for themselves. The playtest will include the first part of the game — explore its spaces, solve puzzles, and begin unraveling the mysteries that lie ahead. This…Community29 Jul 2026FAQ Sublustrum: Answering Your First QuestionsHello everyone! Since announcing Sublustrum , we've been reading your comments, questions, and discussions across Steam, Discord, and other social media. Some of you remember the original game, while others are only just discovering the Flickering World. There are still a few things we're not ready to reveal just yet, but we'll continue sharing more as development progresses. Today, we'd like t…Community15 Jun 202650,000 wishlists for Sublustrum — thank you!We’re grateful to everyone who has followed the game, added it to their wishlist, and supported its return. It means a lot to us to see so many players looking forward to stepping back into this world. More news about Sublustrum , including updates on the demo, will be shared soon. You can also follow Sublustrum here: · X: · Instagram: · Reddit: reddit.com/r/Sublustrum · Discord: Thank you for…