The first bulk buy occurred in November of 2000 and included the following games:

Alpine Ski
Bubbles
Champion Baseball
Cliff Hanger
Congo Bongo
Defender
Dig Dug
Discs of Tron - environmental
Donkey Kong
Donkey Kong
Donkey Kong Jr.
Donkey Kong Jr.
Frenzy
Frogger
Frontline
Gorf
Gravitar
Joust
Jungle Hunt
Krull
Mach III - cockpit
Mad Planets
Millipede
Moon Patrol
Mr. Do's Castle
Ms. Pacman
Nibbler
Pengo
Popeye
Space Duel
Star Trek
Star Trek - cockpit
Star Wars - cockpit
Star Wars - cockpit
Stargate
Super Pacman
Super Zaxxon
Tac-Scan
Tac-Scan
Tapper
Time Pilot
Time Pilot
Track and Field
Tron
Zaxxon
Zaxxon
Zaxxon
Zoar

The second bulk buy occurred in March of 2002 and included the following games:

Double Dragon
Kick
Lock On
Mario Bros
Ms. Pacman
Nintendo vs cocktail
Omega Race
Pit Fighter
Rampage
Sea Wolf
Space Invaders Deluxe

Other games that I have purchased over the years and may or may not own anymore include:

Arkanoid
Cheyenne
Cheyenne
Discs of Tron upright
Frogger
Galaga
Millipede cocktail
Missile Command cocktail
Pole Position 1 and 2 same cabinet
Primal Rage
Starblade
Super Hang On
Super Off Road
Tempest

Pinball Machines:

Spirit of 76
Flash Gordon
Mata Hari
Strike and Spares

For a grand total of 73 games and 4 pinballs if I added correctly.