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In 1982, Atari Inc. released a port of Namco's hit arcade game ''Pac-Man'' for its Atari 2600 video game console. Like the original arcade version, the player controls the titular character with a joystick. The object is to traverse a maze, consuming all the wafers within while avoiding four ghosts. The game was programmed by Tod Frye, who was given a very limited time frame by Atari to complete the project. The technical differences between the Atari 2600 console and the original's arcade hardware—particularly the amount of available memory—presented several challenges to Frye. Given the popularity of the property, Atari produced approximately 12 million units (which was more than the estimated number of Atari 2600 consoles sold at the time), anticipating a high number of sales. While the port is the best selling Atari 2600 game of all time, selling an estimated 7 million copies, and was the best-selling home video game of all time when it was released, critics focused on the gameplay and audio-visual differences from the arcade version. Initially, the port boosted the video game industry's presence in retail. It was followed by Atari 2600 ports of ''Pac-Man''s arcade sequels. ==Gameplay== ''Pac-Man'' is a version of the original arcade game, which Namco released in 1980, and features similar gameplay. The maze has a landscape orientation. The warp tunnel is located at the top and bottom as opposed to the sides. The screen consists of 126 dashes (called wafers). The ghost box is square with the door on the right side. The four ghosts start in the box one on top of the other. The point values of items are much lower. The prize at the bottom of the ghost box is a square called a vitamin worth 100 points. It behaves like a regular fruit. However, if Pac-Man loses a life when the vitamin is shown, the vitamin may not be necessarily forfeited. The player uses a joystick to navigate the round, yellow titular character, which starts each game at the center of a maze. The goal is to eat wafers scattered throughout the maze by moving Pac-Man over them while avoiding four ghosts (enemies). Each time Pac-Man comes into contact with a ghost, he dies, losing a life and reappearing at the center of the maze. When Pac-Man runs out of lives, the game ends. The game starts with four lives and a bonus life is earned at each cleared maze. The ghosts are avoided when they are white. The power pills temporarily make the character invulnerable to the ghosts, and make a distinctive sound effect. During this time, the ghosts turn a purplish blue color and Pac-Man can eat the ghosts for additional points, after which the ghosts return to the center box as eyes and respawn. When the eyes reach the box, they stay there until the power pill elapses. After the power pill elapses, the eyes respawn and the ghosts exit the box. If another power pill is eaten when there are eyes in the box, the eyes stay in the box until that pill elapses. Before the power pill elapses, the sound effect stops and the ghosts (and any eyes if ghosts are eaten) turn pink. The ghosts are known to flicker and have closed and animated eyes compared to the arcade version where the direction of the eyes determine the direction of the ghost's travel. A ghost in "eyes" after being eaten blue is shown as two squares that look like eyes. The four ghosts are divided into two pairs with one pair slightly faster than the other pair. It is possible two ghosts can overlap each other and appear as one ghost on the screen. The game has eight variations offering two different starting speeds for Pac-Man and four different starting speeds for the ghosts. The ghosts get slightly faster each subsequent round, but Pac-Man stays at the same speed. The A-B difficulty switch can be used: in the A position, the power pills' effects do not last as long. 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「Pac-Man (1982 video game)」の詳細全文を読む スポンサード リンク
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