In Lost Keys, players navigate through various levels, searching for six lost keys while overcoming obstacles, solving puzzles, and avoiding dangers. The core mechanics involve strategic movement and interaction with the environment, including the destruction of bombs using stones found along the way.

The storyline of Lost Keys revolves around a quest to find keys that unlock doors, with each level presenting new challenges and puzzles to solve. Players must demonstrate courage and cleverness to progress through the game.

Lost Keys stands out with its emphasis on scenario interaction and the combination of puzzle-solving with strategic gameplay elements, providing a refreshing take on the adventure genre.