Lost Skies sets its adventure among floating islands and the remnants of ancient civilizations. Players explore ruins, solve puzzles using Atlas, a mysterious force that keeps the world afloat, and uncover technology left behind by earlier inhabitants. Threats include ancient turrets and drones, as well as colossal beings roaming the skies, giving exploration a dangerous edge.
Movement and construction shape the experience. A physics-based grappling hook, hang glider and wingsuit let players climb, glide and travel between landmarks. The skyship is both home and weapon: its parts can be placed freely, with builders balancing durability, agility and firepower. An Island Creator adds another creative outlet, letting players design islands and share them through Steam Workshop.
The listed formats include single-player and multiplayer, with co-op and online co-op also specified.