BATHYSPHERE is a horror strategy game where the confined space of a bathysphere becomes the only refuge in the endless darkness of the ocean. The descent into the depths becomes a dangerous quest to find a missing person, but the further the expedition progresses, the more questions arise about the surroundings and the true purpose of this dive. Hunting using echolocation Contact with the enemy is based on the exchange of sonar pulses, where the reflected signals provide only an approximate understanding of the target's position. A misinterpretation leads to vulnerability, while a correct calculation allows for the first strike. Space is not directly visible, so one must navigate by sound and analyze the received data. Setbacks don't end the journey; they add information, allowing a better understanding of what's happening. Strange structures and discovered records gradually reveal details of what's happening, but the answers aren't given directly. With each new dive, the picture becomes clearer, though the ultimate truth remains hidden deep beneath the surface. Features of the game Turn-based collisions using sonar signals. Navigation through sound and analysis of reflected impulses. Repeated attempts while maintaining the acquired knowledge. Research of underwater complexes and documents.