5+
Downloads
Content rating
Rated for 3+
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About this game

The Clock is Ticking. The Room is Silent.
Welcome to Lost Key, the minimalist, psychological escape challenge that pushes your observation skills to the limit. You are trapped in an absolute void—a dark, inescapable room with one objective: escape. But the door is locked, and the total number of keys required is unknown.

Your Only Mission: Find Them All
Lost Key strips away distractions to focus purely on the core puzzle experience. Every shadow, every surface, and every sound is a potential clue.

The Unknown Variable: Unlike other escape games, you don't know how many keys you need to collect. The pressure builds with every key found, driving you to search deeper and more desperately.

Master the Darkness: Use subtle light sources, environmental interactions, and pure deduction to navigate the oppressive darkness. Your perception is your only weapon against the void.

Progressive Difficulty: The initial keys may be obvious, but the final, crucial keys are hidden in complex, sequential puzzles, demanding true spatial awareness and logical thinking.

Key Features
High-Tension Escape Experience: A focused, dark-room environment designed to keep you on the edge of your seat.

The Mystery of the Unknown Keys: A unique mechanic where the required number of items is part of the puzzle itself.

Challenging Logic Puzzles: Solve complex riddles and environmental interactions to reveal hidden key locations.

Minimalist Design: Clean, atmospheric visuals that maximize focus on clues and minimize visual clutter.

Prove Your Deduction: Compete for the fastest escape time on global leaderboards and master the darkness.

Download Lost Key now and test your nerve. Can you find the unknown number of keys before the dark consumes you?
Updated on
Oct 18, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Committed to follow the Play Families Policy