Before you begin
Answers to common playtest and release questions.
When is the Sublustrum playtest?
The announced Steam open playtest runs from October 12 to October 25, 2026 and covers Chapter One. Check Steam for availability in your region.
When will Sublustrum be released?
Steam lists Q1 2027. An exact day has not been announced; older articles mentioning autumn 2026 should not be treated as the current schedule.
Is Sublustrum an audio-only game?
No. It is a first-person puzzle adventure with visual exploration and a strong emphasis on sound. Listening is part of solving puzzles.
Which platforms are confirmed?
Steam lists a Windows PC release. The official Xbox store also lists Xbox One, Xbox Series X|S and PC. We have not found first-party confirmation for PS5 or Nintendo Switch. The Q1 2027 window cited here is from Steam.
Is Sublustrum the same game as Outcry?
Sublustrum revisits the 2008 adventure known internationally as Outcry. Our history page explains the connection; original puzzle solutions should not be assumed to work unchanged.