1. Blinky
   Inky
2. Fred

There are four ghosts that chase Pac-Man in the games. Their names are Blinky, Pinky, Inky and Clyde, and all have distinct travel patterns.

1. spaceship
   alien
2. asteroid

In "Defender," players use a joystick to control a spaceship, which is used to destroy invading aliens while protecting astronauts on the surface of the planet.

1. 3-D glasses
   voice control
2. diving ships

"Galaxian" was one of many "Space Invaders" clones introduced in 1979, but it offered one feature not found in the original -- alien ships that could dive down out of formation for a more targeted attack.

1. cherry
   POW block
2. mushroom

Hitting the POW block would flip all enemies to their backs, but the block could only be used three times before it would disappear.

1. cockroaches
   spiders
2. scorpions

To win at "Centipede," players were forced to avoid a host of obstacles including spiders, scorpions and fleas -- not to mention a screen filled with dangerous mushrooms.

1. ape
   spider
2. snake

A player loses a life in "Q*bert" when he runs into Coily the snake or crosses paths with a pair of purple bad guys named Ugg and Wrongway.

1. "Space Invaders"
   "Tron"
2. "Tempest"

In the 1981 game "Tempest," players guided a ship named Blaster down a 3-D tunnel while destroying obstacles using a Super Zapper.

1. lion
   penguin
2. duck

Pengo is a penguin who moves along a maze of ice blocks while avoiding the evil Snow Bees in the 1982 arcade favorite.

1. 1971
   1981
2. 1991

The power pellet-chomping "Ms. Pac-Man" started gobbling quarters in 1981. The game was similar to the original "Pac-Man," but featured different colored screens and solid walls, plus additional warp tunnels that allowed players to sneak across the screen.

1. 1962
   1972
2. 1982

Made by Atari, "Pong" became the first commercially successful arcade game in the 1970s, spawning dozens of imitators and inspiring an arcade frenzy. The first "Pong" prototype was installed in a California bar in 1972, and the rest is gaming history.

1. 3
   5
2. 7

Players use a laser gun on the bottom of the screen to blast through five rows of aliens in the classic 1978 game.

1. "Disc-Man"
   "Puck-Man"
2. "Pizza-Man"

The first "Pac-Man" machines were installed in a Japanese movie theater in 1979. By the time the game came to the U.S. the next year, the name had been changed to "Pac-Man."

1. 100
   256
2. 999

The maximum possible score in the game is 3,333,360. It took world record holder Billy Mitchell 6 hours and 256 levels to get his name at the top of the "Pac-Man" record books in 1999.

1. pretzel
   banana
2. key

Forget fruit; the bonuses prizes in "Pac-Man" range from a cherry worth 100 points to a key worth 5,000 points.

1. blue
   red
2. yellow

In "Rally-X" players must steer a blue car around a maze, capturing flags while avoiding a red car in hot pursuit.

1. 3-D graphics
   background music
2. wireless controllers

"Rally-X" came out in 1980 and was one of the first games to have continuous background music. The Namco-produced arcade classic was also one of the first games to introduce the concept of bonus rounds.

1. lily pads
   sand bars
2. logs

The 1980 favorite "Frogger" challenges players to cross a busy road, then traverse across a river using logs, alligators or turtles.

1. extra lives
   game resets to the beginning
2. game permanently shuts down

"Defender" had a strange bug that rewarded players with bonus lives and extra ammo at 990,000 points. Once the player reached a million points, the game would restart, but players would still get to keep those extra lives in the rebooted game.

1. Nintendo
   Atari
2. Namco

Atari introduced "Asteroids," in which players guide a triangle-shaped ship through a field of asteroids and hostile UFOs, in 1979.

1. 2
   3
2. 4

"Tron featured four distinct segments when it came out in 1982, including Battle Tanks, Light Cycles, Grid Bugs and the MCP Showdown.

1. 12
   28
2. 56

In the 1982 favorite "Q*bert," players guide the title character down a pyramid made of 28 cubes. As Q*bert hops on each cube, it changes color.

1. "Xevious"
   "Defender"
2. "Space Invaders"

In the 1983 scrolling shooter "Xevious," players control a combat aircraft named Solvalou while avoiding enemy attacks from the ground.

1. Fygars
   Flubers
2. Pookas

"Dig Dug" featured two types of bad guys, including fire-breathing dragons called Fygars and cute little monsters known as Pookas.

1. hearts
   stars
2. coins

In the game, Popeye must collect hearts, musical notes or letters dropped by Olive Oyl, all while avoiding Brutus and other enemies.

1. blond
   black
2. green

Players control a green-haired fighter while boxing with such foes as Glass Joe and Quick Kid in the 1984 arcade game.

1. superhero
   wolfman
2. clown

Introduced in 1982, "Mr. Do!" was a "Dig-Dug"-style game featuring a clown who collected cherries while avoiding a gang of red monsters.

1. 2
   3
2. 4

Players had to work their way through four different worlds of obstacles in the 1981 game, including the opening ladder scenes, a series of conveyor belts, a bunch of elevators, and finally, a level that required Mario to remove rivets to defeat the great ape.

1. Darlene
   Pauline
2. Peach

Princess Peach wasn't around when "Donkey Kong" debuted. Instead, the angry ape was holding Pauline hostage, and Mario was off to the rescue!

1. 1977
   1980
2. 1983

In the original 1983 version of "Mario Bros.," enemies spilled from a series of underground pipes, leaving Mario and Luigi stuck fighting in the sewer.

1. cherry
   pretzel
2. banana

Like in the original "Pac-Man" game, cherries in "Ms. Pac-Man" are worth 100 points. To really max out the scoreboard, look for bananas, which add a whopping 5,000 points to your total.