High Mobility Fantasy Gunparade March (高機動幻想ガンパレード・マーチ) is a landmark tactical role-playing and social simulation game developed by Alfa System and published by Sony for the PlayStation 1 in 2000. Set in an alternate history where humanity has fought alien "Phantom Beasts" since 1945, you take the role of a student soldier in 1999. The game is famous for its complex AI system where NPCs live out their own lives, forming relationships and making decisions independently of the player, making every playthrough a unique experience.
