A-Jax (エー・ジャックス) is a vertically scrolling shooter released in arcades by Konami in December 1987. There was a European release of the game called Typhoon, which is the name used for Imagine Software's ZX Spectrum, Amstrad CPC, and Commodore 64 ports.

The players control a "Tom Tiger" helicopter (in the 2D stage) and later a "Jerry Mouse" fighter jet (in the 3D stage), and shoot enemies in the air and bomb them on the ground, collecting power-ups and defeating bosses to advance levels.

The game takes place in a fictional 2007 where the Earth has been conquered by alien invaders. The player combats the occupation forces using vehicles under operation code named 'A-Jax' created to liberate the Earth. Game play is divided into two scrolling sections with two different vehicles: the first being a vertical scrolling section with the helicopter and a Rail scrolling stage with the jet/space fighter. The game spans eight stages and extends to 30,000 points, a second at 150,000 points.

During the helicopter segments, the player has access to four different weapons including the Vulcan, Bomb, 3-Way, Triple and Laser. Each weapon is available through their own specific pick-up icon. However, the helicopter can only equip one firing weapon at a time with the Bomb being constant. The player also has access to Options which add additional firepower. The jet segments contrast highly from the helicopter segments, they have a complete lack of available power-ups and additional weapons beyond a machine gun and bomb.