1943 Kai is the Japanese version of the Capcom game 1943: Battle of Midway. Like its American cousin, 1943 Kai asks the player to take control of a plane flying over clouds and oceans and take on hordes of enemy fighters and ships with a bevy of special tricks and secret weapons at his disposal.

The first button fires while the second one allows the player to loop his plane and avoid enemies coming at him from behind. Pressing both buttons at once unleashes a secret weapon which manifests itself as a wave over water and lightning when in the clouds. Power-ups can be picked up, which boost the player's regular weapons for short periods of time, and squares which say "POW" increase the player's shields, which decrease every time he's hit until they are depleted and the game ends.

Unlike the American game, however, this one features a biplane instead of a fighter with two propellers, and the enemy planes are smaller and come in bigger numbers. Some of the power-ups, such as the one that grants two wingmen, are different as well. ~ Brad Cook, All Game Guide