Codename: Tenka is an original first-person shooter developed for PlayStation and PC. In a futuristic setting, players take the well-armed role of the title character, who battles against the forces of a genetic engineering organization gone wrong. Enemies are varied, some deadly powerful, others agile, and difficult to hit. The game is completely 3D-rendered, and it is possible to aim up and down as well as left and right. Large, complex levels pose labyrinthine challenges, as well as the powerful bosses that wait secured in their deepest chambers. The game is set apart from contemporary first-person shooters by a crouch ability, which allows the lead character to crawl through ducts and other short spaces. The character can also run, strafe, and jump, for full-motion 3D shooter play.