DREADMOOR is a first-person adventure game set in a perilous underwater world that fuses fishing, crafting, and combat. Players navigate a fishing trawler through submerged islands and the remnants of a lost civilization, engaging in a variety of activities such as catching over 100 species of fish, upgrading their vessel, and managing resources. The game emphasizes exploration, with players scavenging for materials from abandoned locations to craft essential items like baits and harpoons.

In addition to fishing, players must contend with mutated creatures and environmental hazards, including radiation. The game features a dynamic ecosystem where players must strategize to survive against both aquatic and terrestrial monsters. Every expedition can lead to thrilling encounters, making each mission a potential adventure filled with danger and discovery.