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''North Atlantic '86'' was a computer war game covering a hypothetical conflict between NATO and the Soviet Union. Written by game author Gary Grigsby and published by Strategic Simulations, Inc. it ran on the Apple II platform. A Macintosh version was released in 1986.〔(), The History of SSI Games〕〔(), Le Grenier du Mac (in French)〕 The game used the same basic program used by Grigsby's previous ''Guadalcanal Campaign'' and ''Bomb Alley'', which were coded in the Applesoft BASIC language. Each turn represented twelve hours, but in ''North Atlantic '86'' air and land combat could also take place at night instead of only during daytime turns. There were many other additional features, such as electronic warfare, missile attacks, and the ability to conduct multiple paratroop drops. The most important was the ability to not only overrun enemy bases, but use them after a short delay. This made the possession of Iceland especially valuable. As in the previous two games, an AI "player" was available for one side only: the Soviets. NATO had to have a human player. The game assumed that Warsaw Pact forces had successfully overrun most of Western Europe. The Soviets' next goal was to close the North Atlantic and starve Britain. Conversely, NATO was required to keep Britain supplied, primarily with ship convoys. The game assumed both sides would restrict the use of nuclear weapons to anti-submarine weapons only. There were four scenarios ranging from one convoy to Britain, up to a full campaign of several months. ==Game details== In Grigsby's prior games, the computer kept track of the number of torpedoes carried on each ship and submarine. But the need to keep track of so many other variables in ''North Atlantic '86'' necessitated deletion of those counters. Instead each ship had a fixed probability of exhausting its stock of torpedoes each time it fired. This meant, for example, that a submarine might run out of torpedoes after its first attack. Other weaknesses of ''North Atlantic '86'' included the ability of unarmed search and cargo aircraft to go anywhere they had the range to go, immune to enemy fighters. This allowed bases that should have been isolated to be supplied and active. Additionally, search aircraft could spot enemy ships almost anywhere in the Atlantic. This led to airstrikes every twelve hours whenever ships were at sea, an unlikely tempo of operations. In spite of these and other limitations, the game was an extraordinary achievement, given that all program code and game data were on a 140KB floppy disk, and the game executed on an Apple II with as little as 48KB of RAM. In fact, Grigsby pushed the limits of the Apple II so far that there would not have been enough memory available without using SSI's proprietary RDOS instead of Apple's conventional operating system. The players faced a number of challenging decisions, but they had a variety of potent ships and aircraft at their disposal. Although the game relied on text for most of the interaction with the players, most players found high excitement levels during the combat phase. Program execution was surprisingly fast for a BASIC program on an 8-bit 1 MHz CPU, although later turns when most vessels and aircraft were deployed could take 4-6 hours to execute. Combat was intense, and losses on both sides were high. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「North Atlantic '86」の詳細全文を読む スポンサード リンク
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