It is the world's first networked RPG with consumer game consoles as the main platform. Initially, only the client software for Sega Saturn was released, but later the client for Windows was also announced. The game takes place as a 3D dungeon crawler RPG. The game world (server) was unique and all participants played on the same server regardless of the platform (pc or saturn). There are two main worlds, the human world "Messeria" and the parallel demon world "Tyzeria". It is said that an experiment conducted by scientists in Messeria created a hole in space-time and that the demon invasion started from Tyzeria.