Here's my collection, i'm not going to list games, would take absolutely forever, but I'll put the number of games I own for each system (estimated)
1. Atari 2600(250+games, no dups.)
2. Atari 7800(30+games)
3. Atari 2600JR
3. Atari XE(7 games)
4. Atari Lynx(6 games)
5. Atari Jaguar(20 games)
6. ColecoVision(15 games)
7. Intelevision(30+ games)
8. GamePark32(no commercial games)
9. Nintendo(NES) only got 3 games left
10. Nintendo Gameboy(1 game)
11. Nintendo Gameboy Advance(6 games)
12. Nintendo N64(3 games)
13. Sega GameGear(4 games)
14. Sega DreamCast(6 games)
15. Sega Genesis(8 games)
16. Sega CDX(5 games)
17. Sega Saturn(20 games)
18. Sony Playstation2(15 games)
19. Virtual Boy(3 games)
20. Odyssey2(8 games)
21. Commodor VIC-20(0 games)
I think I got them all.