The case is officially open. Obsidian Moon, the noir detective simulator from Lost Cabinet Games, is making its public debut with a playable demo during Steam Detective Fest, inviting players to step into a rain-soaked city of secrets and take on their very first murder investigation.
Set against a moody 1930s noir backdrop, Obsidian Moon is a text-driven detective adventure steeped in psychological tension. Players assume the role of Carter, a once-respected homicide detective haunted by grief, failure, and a past that refuses to stay buried. Solving crimes isn’t just about logic—it’s about instinct, moral compromise, and how far you’re willing to push yourself in pursuit of the truth.
The demo drops players directly into the action with an introductory tutorial followed by the game’s first full murder case. From interrogating witnesses and combing through records to relying on forensic analysis—or taking morally questionable shortcuts—every choice matters. The investigation dynamically adapts to your approach, offering more than 30 different investigative paths depending on how you pursue leads and connect the dots.
According to Game Director Yannis Antonakakis, the demo is designed to be a genuine slice of the experience, not a heavily scripted teaser. It’s a complete case meant to encourage experimentation, mistakes, and tough decisions, all while immersing players in the mental toll of life as a detective in a decaying city.
Players can expect 20 to 45+ minutes of gameplay, access to nearly the full gameplay feature set—including the atmospheric Noir Mode—and an early look into Carter’s troubled past and the unsettling tone that defines Obsidian Moon.
The Obsidian Moon demo is available now on PC via Steam as part of Steam Detective Fest, with the full game scheduled to launch sometime in 2026. If slow-burn mysteries, branching investigations, and psychological noir are your thing, this is a case worth taking on.