888XHRuby Gameplay: Fireflies spill from the NEST at the bottom of the cave and drift without a path. The bright oval at the top is the EXIT. Tap anywhere to plant a faint glow (up to 6; a new tap replaces the oldest). Nearby fireflies steer toward a glow, then hop toward the next glow that sits closer to the cave mouth. Chain lights from the nest up to the exit to form a lantern trail.
Each firefly that reaches the exit adds 10 to Score. Higher scores spawn a larger, faster swarm.