Robot City Arcade as of 5/19/2011.

Current lineup has the following 20 games working that you can play for a quarter:

Space Invaders

Galaga

Bosconian

Gaplus

Sinistar

Donkey Kong

Donkey Kong Junior

Super Mario Bros.

Pac-Man

Super Pac-Man

Pac-Land

Missile Command

Q*Bert

Vanguard

Gyruss

Top Speed

Klax

Tournament

Arkanoid

Playchoice-10 with the following games:

Mike Tyson's Punchout

Super Mario Bros. 2

Super Mario Bros. 3

Dr Mario

Contra

Baloon Fight

TMNT

Gauntlet

Ninja Gaiden

Excitebike