1942/Versions

Amstrad CPC
Released by Elite Systems for Europe in 1986.

Commodore 64
Released by Elite Systems for Europe in 1986.

Bonus for percentage of destroyed enemies is 100 points * percentage.

The movement area is extremely tight for a shooter, allowing for a great chance of being killed by single shots. In addition, it is extremely difficult to destroy some enemies before they leave the screen with the basic double shots.

Some enemy bullets track the Super Ace, and can only be avoided by rolling. These bullets are fired by the "boss" bomber on stages 17, 09, and 01. The boss airplane departs only after 5-15 seconds,

Completing the final stage loops you back to the beginning mission.

Game Boy Color
Converted by Digital Eclipse Software and published by Capcom in 2000.

MSX
Released on the MSX1 by ASCII for Japan in 1987. Later rereleased with improved graphics on the MSX2

NES
Released by Capcom in 1985.

Sinclair ZX Spectrum
Released by Elite Systems for Europe in 1986.