Vietnam: 1965–1975

With a 48-page rulebook, 780 counters, three large 22" x 34" hex grid maps and an estimated playing time of 400 hours, the game has been characterized as very complex.

Then the players go through a series of phases including targeting, movement, alert, combat, retreat, and pursuit, which are repeated until the operation ends.

[2] The American player must also contend with the effects that military actions, victories and defeats have on morale in both in the United States and South Vietnam.

Karp spent 18 months researching the war, reading the Pentagon Papers and first-hand accounts, as well as interviewing veterans.

However, Train and Ruhnke found that in the 21st century, those attitudes had softened, writing, "Yet now, gaming Vietnam appears increasingly accepted.

"[5] In Issue 22 of the French games magazine Casus Belli, Hervé Hatt called the game "a very ambitious title, both in terms of its theme and for the great delight of an American public who now have enough perspective to dissect the passionate reactions of the time; and to enable them to win a campaign which had to be won, and which was lost because war is too serious a matter to be left to the military."

Hatt deplored the cover art, which he called "second rate", but found the map "very beautiful, a real patchwork of exotic and abundant colors."