Phantasy Star is a long-running and iconic Japanese RPG series developed by Sega. Originally released in 1987, the series is set in a science-fiction universe and is known for its innovative gameplay, including the use of 3D dungeons and turn-based combat. Over the years, it has expanded into various spin-offs, including online multiplayer games. The series blends fantasy and science fiction elements, offering players an immersive world filled with adventure and exploration.