"Sunless Skies" is a narrative-driven exploration game developed by Failbetter Games. Set in a dark, Victorian-inspired universe, players navigate a vast, open world aboard a flying locomotive. The game combines elements of survival, resource management, and storytelling, allowing players to encounter various characters and factions. Players can customize their engines and crew while facing challenges such as hunger, madness, and hostile entities. The game features a rich lore, drawing inspiration from the earlier title, Fallen London, and offers multiple storylines and endings based on player choices. Exploration and discovery are central to the gameplay experience.