Walther PPK
Oshii describes his game as a "military RPG". However, it mixes elements of Role Playing Game (such as character classes and experience points) and First Person Shooter (FPS) (utilizing real firearms such as semi-auto pistols (Walther PPK and Mauser C96), sniper rifle (Dragunov SVD) and rocket launcher (RPG-7)); and it also borrows from the Wizardry series Oshii played extensively during three years in which he was unemployed in the 1980s.