Once you have purchased Harrier Attack II you are eligeable to receive one or more cheat codes per week, for a year after purchase. The cheats are provided as codes to be entered on your PC keyboard which enable fun and useful features which you may otherwise have to be awarded when you succeed at a mission, or may not be available in any other form.

To acces the cheat codes after you have purchased the game, run the game and go to Main-Menu>Help>A-Cheat-A-Week. An internet connection is required for cheat code access.