gungriffon
Gungriffon is a mecha-themed FPS video game developed by Game Arts for the Sega Saturn in 1996. The game has three sequels: "Gungriffon II", "Blaze" and "Allied Strike"
Its English version has a bit different story from the Japanese version of it. The original story takes place in 2015 and the player is a HIGH-MACS pilot of the APC (Asian Pacific Community)'s Foreign Legion. In the English version, the player is a member of the UAC (United America Countries) in 2074.