[2] Set in a very fictionalized account of the final months of the Vietnam War, the story follow the soldiers Silver and Brown as they enter into the war once again in order to rescue ex-American army scientist Dr. R. Muckly and his daughter Nancy, who were kidnapped and presumably imprisoned in the interior of Vietnam by North Side terrorists (that is implied to be the Viet Cong), while also trying to learn about the responsible author of the act.

If the joystick is pulled diagonally when running, the soldiers will perform an evasive roll that prevents them from being killed, in addition of dodging enemy fire as well.

We will never forget the nightmare of that summer..." these were the phrases that started the story of Silver and Brown,[3] two soldiers who were recalled back to the Natorm headquarters in the summer of 1975, during the final months of the Vietnam War, in order to rescue the ex-U.S. army scientist Dr. R. Muckly, who was kidnapped and presumably imprisoned in the interior of Vietnam by North Side terrorists, as part of an organized special forces unit.

Once the team arrive safely into the airport, the soldiers proceed to continue the mission by assaulting the complex, now realizing that there is a spy among them but after the assault of the enemy airport, their communication systems were intercepted by the terrorists and the captain of the unit informed to the soldiers that Nancy Muckly, the daughter of Dr. R. Muckly, was also taken away alongside his father and gave the team new orders to enter into enemy arms factory.

Despite the intense firepower of the weapon, the troops defeat Dr. R. Muckly and save the world, with the special forces now being regarded as heroes but the war continues in Vietnam.

[10][11][12][13] It was re-released for the Neo Geo CD on September 9, 1994 as one of the launch titles for the system, with minimal changes compared to the original MVS and AES versions.

[14][15][16][17] The game has received multiple re-releases in recent years on various digital distribution platforms such as the Virtual Console, PlayStation Network, Nintendo eShop and Xbox Live.

[18][19] When the Neo Geo AES version was originally launched in Europe, the cover art of copies released in the region were subsequently censored due to the female character on the front having a bare thigh and cleavage exposed.

[20] In Japan, Game Machine listed NAM-1975 on their December 15, 1990 issue as being the twenty-second most-successful table arcade unit of the month, outperforming titles such as Out Zone.