O (24 JOGOS)

  1. Ochaken No Heya
  2. Ohanaya-san Monogatari
  3. Okuman Chouja Game
  4. Our Breeding Series
  5. Ozzy & Drix #PROPER#
  6. Oshare Wanko
  7. Oshare Princess
  8. Ougon no Taiyo
  9. Oshare Princess 3
  10. Ougon no Taiyou - Shitsu
  11. Oshare Princess 2 And Doubu
  12. Operation Armored Liberty
  13. Ougon no Taiyou - Shitsu
  14. Oshaberi Inco Club
  15. Onimusha Tactics
  16. Onimusha Tactics (hack)
  17. One Piece - Going Basebal
  18. One Piece - Nanatsu Shima
  19. Oriental Blue - Ao no Tenga
  20. One Piece - Mezase! King
  21. Ojaru Maru - Tsuki Hikari
  22. Okaitoku Series 5 - Puzzle
  23. O Hana Okusan Ninarou
  24. Oddworld - Munch's Oddysee