KELDER
Release date: Aug 15, 2025
Developers: THOs Dev, Mad Muffin Studios
Publishers: THOs Dev
Genres: Adventure, Indie
Categories: Single-player, Steam Achievements, Family Sharing
Supported languages: English, French, German, Spanish - Spain, Dutch, Russian, Simplified Chinese

Trapped in the ominous depths of a post-Soviet basement, you must navigate a chilling survival horror experience where every step unravels more about the dark history that lies within. 'KELDER' plunges you into a labyrinth of fear and mystery, where many scavengers once lost in secret, leaving behind clues and horrors that defy explanation. Unique Gameplay Every Time: Every game offers a new experience with randomized events and encounters. No two playthroughs are the same, ensuring that each journey into the basement is uniquely terrifying. Key Features: Unravel Mysteries: Was this basement a site of sinister experiments or a nexus of unexplained anomalies? Discover the truth as you explore the eerie remnants of Soviet-era research. Survival Horror Atmosphere: Encounter strange and terrifying entities as you make your way through the basement. The chilling environment and haunting soundscape will keep you on edge. Environmental Storytelling: Unearth the stories of past adventurers through letters and environmental clues. Each discovery brings you closer to understanding the fate of those who vanished before you. Puzzle Solving: Find keys, solve puzzles, and unlock doors to progress. Each step forward may reveal more about the basement's dark secrets or lead you deeper into danger. Immersive Walking Simulator: Experience a tense and atmospheric journey where thorough exploration is key. The detailed environment invites you to uncover every hidden corner. Unique Gameplay Every Time: Every game offers a new experience with randomized events and encounters. No two playthroughs are the same, ensuring that each journey into the basement is uniquely terrifying. Gameplay: Awaken in a mysterious basement, with nothing but your wits to guide you. As you explore, gather keys and solve puzzles to unlock doors and reveal the basement's secrets. Letters and environmental details provide crucial hints about the dark experiments and anomalies that took place here. Beware of the strange entities that roam the halls—they are always watching, waiting for a chance to strike. Objective: Your goal is to escape the basement by piecing together its history and surviving its dangers. Navigate through eerie corridors, solve complex puzzles, and outwit or evade the terrifying entities that lurk in the shadows. Will you uncover the truth and find your way out, or become another lost soul in the depths of KELDER? Can you survive the horrors and escape the depths? 'KELDER' awaits those brave enough to uncover its secrets. 


Notes: Dried Bodies: There are scenes featuring old, desiccated bodies which may be disturbing to some players. Monsters: Some creatures in the game are depicted with severe physical deformities, such as missing legs or dislocated jaws. Blood Splatters: The game includes instances of blood splatter which may be unsettling.