Chopper I

Chopper I is a 1988 vertically scrolling shooter arcade game developed by SNK. In Japan it was released The Legend Of Air Cavalry.
The objective of the top-down game is to infiltrate enemy territory and essentially destroy all objects. The game can be played with 1 or 2 players; both players, each occupying one helicopter, play sequentially.
Reception.
In Japan, "Game Machine" listed "Chopper I" on their July 15, 1988 issue as being the ninth most-successful table arcade unit of the year.
Legacy.
The game was re-released for the PlayStation Portable in August 2012.