The player has to avoid barriers and obstacles by navigating a blinking firefly through fully dark caves. If the firefly´s distance towards obstacles is too small, a HEARTBEAT sound will play until the distance gets to a less critical level. Glowing Flowers illuminate certain terrains in a small radius around them. The goal of each level is to reach all flowers. By collecting all flowers, the player unlocks new areas he/ she can explore. Not only the level barriers but also lurking enemies like spiders and bats are hiding in the dark.