* Air-to-ground guided missiles by pressing left+fire
* Two player mode, where second player / CPU controls other Harrier, in a co-operative style game.
* Air-drops of health and weapons to help the player through the level.
* Flak damage counter, which was present in the original game but not displayed
* Redefinable keys
* Additional weapons, such as Maverick air-to-ground missiles.
* Air-drops of health and weapons to help the player through the level.
* Ability to hover or land to rescue captives in special mission.
* Pixel scrolling for planes and missiles (a possibility - although this breaks the character of the original game)