1943 Kai: Midway Kaisen ("1943 Revision: Battle for Midway") is a vertical-scrolling shoot 'em up set during WWII. The game was released by Capcom in the Arcade one year after 1943, alongside the Famicom port of 1943. The game is a modification of 1943, including modified assets, fewer levels, and more challenging gameplay.
In 1991, Capcom released a version for the PC Engine titled 1943 Kai which further updated the graphics, added a new soundtrack, but otherwise carried over the Arcade version's modifications from the original. The PC Engine port is compatible with the MultiTap accessory.
The Arcade version was made available in four compilations: