The case is officially open. Obsidian Moon, the noir detective simulator from Lost Cabinet Games, is launching its first public playable demo as part of Steam Detective Fest, inviting players to step into the shadows and take on their very first investigation.
Set in the smoke-filled alleys of a city drowning in secrets, Obsidian Moon is a text-based detective adventure rooted in 1930s noir and psychological tension. Players take on the role of Carter, a once-respected homicide detective haunted by grief and failure, tasked with solving a series of interconnected murders through logic, instinct, and the steady collapse of his own sanity.
“The call came in last night about a corpse found at the Obsidian docks. By the time I rolled in, head still spinning from the bottle of Jack the previous night, our boys in blue had already cordoned off the scene and rounded up three suspects…”
In the demo, players will take on the first murder investigation, navigating a dense web of leads, choices, and consequences. Whether you interrogate witnesses, dig through records, rely on forensic work, or take more questionable shortcuts, the case adapts to your methods, offering more than 30 different investigative paths depending on how you approach the case.
“Steam Detective Fest felt like the perfect moment to let players get their hands dirty,” said Yannis Antonakakis, Game Director at Lost Cabinet Games.
“The demo isn’t a vertical slice, it’s a real case, built to show how much freedom the game gives you. We want players to experiment, make mistakes, and feel what it’s like to live inside an investigation, even if it costs them.”
KEY DEMO FEATURES:
An introductory tutorial case plus the first original case of the game
30+ investigative solutions, depending on your choices and methods
20 - 45+ minutes of gameplay, based on player approach
The (almost) complete gameplay feature set, including the atmospheric Noir Mode
A first glimpse into Obsidian’s dark past and unsettling atmosphere
AVAILABILITY
The Obsidian Moon demo will be available on PC via Steam starting January 12, as part of the Steam Detective Fest
The game will launch on PC via Steam in 2026
Players can wishlist the full game now and experience the demo during the event.
