Butterfly Escape is typically distributed as a or "shareware" version. While the trial allows you to experience the core mechanics—guiding Buka to shoot balls of light and save trapped butterflies—it eventually locks. A valid registration key:
With a collective shimmer of orange and gold, the million-strong swarm began to move. They blurred into a stream of light, flowing out of the "locked" drive and into the safety of the cloud. Eli slumped back, watching the last pixelated wing vanish into the horizon. The escape was complete. expand the lore butterfly escape registration key