HAL 21 HAL 21 is a third-person action game with a mixture of shooter, flight simulator and emulator game from the masters from the SNK Corporation studio. The game is... Read more About the game Buy the game Requirements Similar games Reviews and ratings Gallery Forum Release dates Quotes System Requirements HAL 21 This game does not list PC as a target platform.If the game is decided to be released on PC, the system requirements for it will appear on this page.