I was thinking about the idea of 'classic' games. I break it down like this:
 
- 'Vintage' come in two categories: the largely mechanical with some images projected games; and Pong up through the Cinematronix games through '79.
 
- 'classic' means completely video displayed, CPU-based, remarkable to infamous. These games to me are:
 
    Asteriods
    Battlezone
    Centipede
    Defender
    Donkey Kong
    Frogger
    Galaxian
    Joust
    Missile Command
    Pac-Man
    Pole Position
    Robotron
    Scramble
    Space Invaders (um, yeah, I guess)
    Tempest
 
        So, fifteen. If I had to pick five, essentially meaning almost anyone in the developed world would know them, they might be:
 
    Asteroids
    Donkey Kong
    Centipede
    Galaxian
    Pac-Man 
 
    (Pac being at the top. Originally, I had Frogger in there. EGADS, I FORGOT DONKEY KONG. In both lists. Mmm. Fixed, which means Frogger didn't make the top five. And I suppose it could be argued Space Invaders has a spot in there somewhere. I dunno. I don't remember people really talking about Space Invaders after Galaxian came out. It was sorta like, and I thought this too, Galaxian was the proper version, Space Invaders being a proto-version. Whatever.)
 
 
- secondary 'classics':
 
    Asteroids Deluxe
    Berzerk/Frenzy (maybe)
    Dig Dug
    Donkey Kong Jr.
    Galaga
    Gorf
    Gravitar
    Millipede
    Ms. Pac-Man
    Pole Position II
    Q-bert
    Stargate
 
 
- Then you have all the rest of your golden age games (I'm making after '85 the cut-off; in alphabetical order) :
 
    Armor Attack
    Bagman (I guess. I'm not sure I even remember seeing it anywhere.)
    Black Widow
    Crazy Climber
    Burger Time
    Congo Bongo
    Cosmic Chasm
    Crystal Castles
    Elevator Action
    Excitebike
    Gaplus
    Gunsmoke
    Gyruss
    I, Robot
    Jungle Hunt/King
    Kangaroo
    Karate Champ
    Lunar Lander
    Mappy
    Marble Madness
    Mario Bros. (Not a personal favorite, but it was a pretty big game.)
    Mr. Do series (Many people might know Mr. Do, but I never heard anyone talking about it when I was a kid. I much more remember just seeing the latter three, and love them.)
    Pengo
    Phoenix/Pleiades
    Pooyan
    Popeye
    Punch-out
    Reactor
    Sinistar
    Space Duel
    Star Trek
    Tapper
    Time Pilot
    Time Pilot '84
    Track and Field
    Tutankham
    Xevious
    Zaxxon/Super Zaxxon
    Zektor
 
 
- Special Category
 
    Star Wars
    Tron
    Discs of Tron
    Laser disc - especially Dragon's Lair
 
 
- Odd ones: these weren't remarkable, but definitely remembered:
 
    Qix
    Space Panic
    Turbo (I don't remember seeing it that much, and don't remember anyone really being jazzed about it.)
    Warlords (I actually mostly saw, and played, this on the Atari 2600.)
    Wizard of War
    Cinematronics vector games of the first half of the 80s - remembered....
 
- Esoteric ones:
 
    Major Havoc
    Quantum
 
 
I'd like to take a moment to focus on Indiana Jones and the Temple of Doom - the game I was playing last night that actually got me to thinking about all this. Indiana Jones is an unusual game. To my knowledge, it was the first serious sort of role-playing game in the arcades. You played a truly human-looking character and you actually went places off the board, the direction totally up to you. (Tutankham was a sort of prescient parody of this, though it only scrolled side to side; Jr. Pac-Man and Mappy did this, but those weren't 'real' places.) As well, it's isometric rendering, I'm betting descended in some way from Marble Madness, set it apart from every other game of the time. (However, Marble Madness only scrolled downward.) I don't think it was copied.