In Lazulin, the player controls a female treasure hunter who has discovered a set of ancient mechanical wings. She uses these wings to reach ancient flying fortresses in the sky, where endless treasures are surely present. However, the wings are powered by the sun, and without direct sunlight they stop working after prolonged use. Sunlight enters the fortresses at many points, but it is up to the player to make the best use of the resources available to them. The fortresses are indeed filled with treasures, but the previous occupants made sure that their valuables couldn’t just be taken; each is hidden deep inside, guarded by open chasms, ancient machinery and locked doors. With strong wings and a stronger mind, the treasure will be found.