#puzzles
2 articles
guides
Sublustrum Playtest Guide: Access and Chapter One Help
Join the October 12–25 Sublustrum Steam playtest, check Chapter One puzzle help, and distinguish community hints from verified walkthrough steps.
Last updated: 10/13/2026
guides
Sublustrum Puzzle Guide: Piano, Valves and Sound Hints
Find Sublustrum playtest help by puzzle: piano sliders, the missing fourth cooling valve, and sound-driven mechanisms, with sources and spoiler labels.
Last updated: 10/13/2026