Pac Man is first released in Japan on May 22, 1980 by Namco and thus became the most popular and mostly played game. It appears as a classic game that is still liked by the players. According to the researches it was the highest grossing video game that has earned almost $2.5 billion till 1990s.

The Pac Man is controlled by the player through a maze in which dots are eaten. When all the dots of a stage are eaten by the Pac Man, it moves to the next stage. There are four enemies from which Pac Man have to escape, but in case if enemy touches the Pac Man; one life is lost. When all lives are lost, the game ends. If a player gets successful in scoring 10,000 points, a single bonus life of a Pac Man is awarded.

There are Power-pellets at the corner of the maze that provides a temporary ability of eating his enemies usually called ghosts. There are four kinds of enemies that upon eating them, gives their color to the Pac Man and effects his functioning like speed, reverse direction, etc. to retain his normal color, Pac Man has to move to the Centre box where his color could be retained. The characteristics and colors of Pac Man are:
1. Red = chaser, blinky, shadow.
This enemy moves at normal speed but it speeds up when Pac Man has eaten a certain number of dots.
2. Pinky = speedy.
Pinky moves with the same speed as other ghosts are moving but the difference is that it moves anti clockwise.
3. Inky = bashful.
It is unpredictable as it takes different turns at different times.
4. Clyde = poky.
It is harmless as it turn back when its near to the Pac Man.
Many sequels of Pac Man were also released till 2002 like MS. Pac Man, Pac Man Plus, Super Pac Man, Mr. and Mrs. Pac Man, Baby Pac Man, Professor Pac Man, Pac and Pal, Pac-Mania, Pac ‘N Party, Pac Man-Fever and Pac Man-World.
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