I still have all of these unless noted. Number of games follows the console name.
Unisonic Tournament T-2000 dedicated pong-type machine. (Original long gone, since replaced)
Various pong units from Atari, Coleco, and others. (Not sure if I still have any Atari units)
Atari Pinball
Coleco Tank.
Magnovox Odyssey (6-10; needs repair to video output)
RCA Studio II (10)
Fairchild Channel F (21; needs repair to audio output)
Bally Astrocade (22)
Emerson Arcadia 2001 (23)
APF MP 1000 (8)
Atari 2600 (500+)
Magnovox Odyssey 2 (55+)
Mattel Intellivision (125)
Colecovision (120)
Atari 5200 (55)
Mattel Aquarius Computer (10-12)
Commodore Vic 20 (40-50)
Commodore 64 (100+)
TI-99/4A (100+)
TRS-80 CoCo (75)
Atari 8 bit (400/800/800XL) (100+) -- same games as Atari XEGS
Coleco Adam (full working status unknown)
Vectrex (Traded for Dreamcast)
Microvision (Traded for N64)
NES (425+)
SMS (100+)
TG-16 (50+)
Atari 7800 (55)
Atari XEGS (100+) -- same games as Atari 8-bit computer
SNES (50+)
Genesis (100+) with CD and 32X
3DO (100+)
Atari Jaguar including CD (50+)
Sony Playstation (50)
Sega Saturn (nearly 300)
N64 (100+)
Sega Dreamcast (150)
PS2 (50)
Xbox (80)
Gamecube (80)
Wii (100+)
Gameboy/GB Pocket (30)
GBA/GBA SP (30 plus 10 belonging to my son)
DS (6 -- system and game belong to my son)
VirtualBoy (12)
Atari Lynx (32)
Sega GameGear (100+)
Mike from Morgantown