Developed by a solo Polish developer, the first-person stealth game Procedure Zero is scheduled for release via Steam on November 12.

The protagonist finds themselves locked up in a penitentiary simply for blowing the whistle on corruption. Inside this facility, inmates vanish without a peep and cigarettes double as currency, painting a rather grim picture. Armed with nothing, the protagonist must navigate the entire ordeal without taking a single life.

To take over the prison, the protagonist relies on trading information, using a radio to distract guards, or locking unconscious guards away in empty rooms. According to the developer, the gameplay mechanics will feel quite familiar to fans of Thief and Dishonored.

A free demo is currently available for download, featuring two missions and roughly 25 minutes of playtime. Korean subtitles are also fully supported.