The answer is so clearly Tron, though Joust and Zaxxon come in a close second and third. I’d have nominated Gauntlet as well, but it just misses the cut off date.
I should also note that Star Wars would have won if it were considered a arcade game, it is actually a way of life. A religious experience if you will.
Special mention to 1942, since I just now see that it was pre-1985…suprising.
Yeah well, they already found a new project - Linux on PSP … (not kidding)
I have heaps of games I loved but I don’t know which of them were also slot versions. However, I know that Atari’s Super Sprint was one, which the giant wheels as controllers in a three way cabinet. That was awesome.
Nothing that hasn’t been mentioned…but I’ll put in my votes
OmegaRace - haven’t seen any other version of this anywhere
Tempest - the online version sucks
Defender
Robotron
and too many pinball machines to mention!
Donkey Kong Rules! I especially liked the elevator screen. If you did it just right, you could jump off of one elevator and it would bounce you off a girder back onto the elevator. It didn’t get you anything, it was just fun to do (the first 700 times…then it got old!)
I need to get myself an emulator and a simple joystick so I can play all these goodies whenever the mood hits the way god intended.
I liked the sequel better.
Bank Panic two direction joystick 3 buttons and a whole lotta fun.
Bezerk (Intruder alert Intruder alert! get the Humanoid Stop the Humanoid)
STAR TREK a vector graphics geek fest hell you even get to battle Nomad!!
In addition to Baby Pac-Man (as mentioned above), there were two other video game/pinball combinations, not counting the dreaded ‘Pinball 2k’ that Williams launched to try to save their pinball line (weep).
The other two titles were ‘Granny & the Gators’ and ‘Caveman’.
Also, speaking of unusual pinballs with a video game theme (what?), there was also the ‘Joust’ pinball machine which was set in a cocktail like cabinet and allowed two players to play against each other AT THE SAME TIME! I remember it being a pretty machine, although the gameplay was painfully dull because of the small playfield. Here’s some photos of someone’s: http://www.appolo.com/projects/joustpinball/joust_pinball.htm
Berzerk.
Nah, the first was better. The accelerator loop was a fun gimmick, but it was a gimmick – and rather distracting, IMO.
High Speed, or its lalternate title: All of Spring Semester, Freshman year at college.
Although you haven’tplayed pinball until you’ve played: The Addams Family
I’m of the old school of pinball.
8 Ball Deluxe for me.
Althought I do remember playing both Black Knight and High Speed and enjoying them. Just not as much.
Shoot for… 8 Ball
Sega / Gremlin 1981
If I had a quarter for every quarter I spent in that machine, I bet I’d have alot of quarters 
Count 1 more vote for Marble Madness–also Galaga, Qix, and kudos to the member who remembered Burger Time!
Don’t forget Hyperball, which I had a friggin’ blast with back in '81-82.
Oh god, I payed a ton of that in '92/'93. There was one in a bowling alley next door to where I worked, and I went over there every day at lunch and played it for an hour. Rolled it over several times.
“Kill the humanoid. Kill the intruder!”
Bump N’ Jump
And now two that I simply can’t remember by title. But I can describe them.
The first one was an old west “shoot 'em up” type game, where the control was a dial that you rotated and pushed in to shoot. It rotated the six-shooter in your hand. The bonus level was you by the campfire trying to shoot a rusty tin can for bonus points. One level featured you riding along a speeding locomotive, and there was another button on the game whose sole purpose was “jump off of train”. Anyone?
This one will be easier b/c I remember one of the words - “Quest”. It was something like "Vision Quest or “Galaxy Quest” (You see my problem here? ;)). It was a very old game, with graphics similar to the arcade version of Asteroids. The cool thing was you each had a ASCII looking ship that you could thrust and shoot, and you chased each other around a star in the middle with slow gravity. The controls were rather accurate - slow moving ships that increased speed as they neared the star and did not stop on a dime. The bullets didn’t shoot super-fast either.
The best part was that you could partially disable your opponent’s ship - the ship would appear damaged, and may be only able to fly in tight clockwise circles. But, you didn’t know if they could still thrust and / or shoot or not, so you had to be cautious as you approached to finish them off. Of course, your opponent didn’t know either (unless you didn’t notice him try those buttons or unless he did try them and exposed his still-funtioning ship). Sometimes both ships could no longer shoot, but you still had to time your thrusts to outlast getting sucked into the star. Great, great game.