ASO II - Last Guardian © 1991 SNK.
A full-screen vertically scrolling shoot'em up game.
Runs on the SNK "Neo-Geo MVS" hardware.
Game ID: NGM-007
[SNK MVS Neo-Geo Controls]
2 players - 4 buttons per player (3 usables)
=> Type A : [A] Missile/Laser/Attach armor, [B] Armor attack, [C] Open menu
=> Type B : [A] Laser/Attach armor, [B] Missile, [C] Open menu
ASO II was released in March 1991 in Japan.
This game is known outside Japan as Alpha Mission II.
Pony Canyon / Scitron released a limited-edition soundtrack album for this game (ASO II - PCCB-00062) on May 21, 1991.
The prototype version has different gameplay trailer in the attract mode.