Nintendo Entertainment System (NES) (Starting with O)

Olympic IQ

nes

Operation Wolf

nes

Oishinbo

nes

Ostrich Knight

nes

Overlord of the Demon Realm

nes

Order of Glory

nes

Overlord

nes

Over Horizon

nes

Outlanders

nes

Othello

nes

Otaku no Seiza - An Adventure in the Otaku Galaxy

nes

Osomatsu-kun - Back to the Me no Deppa no Maki

nes

Orb-3D

nes

Operation Wolf

nes

Operation Secret Storm

nes

Onyanko Town

nes

Onigiri Daisuki

nes

Olympus no Tatakai

nes

Olympic I.Q.

nes

Okkotoshi Puzzle - Tonjan!

nes

Oishinbo - Kyuukyoku no Menu Sanbon Shoubu

nes

Oeka Kids - Anpanman to Oekaki Shiyou!!

nes

Oeka Kids - Anpanman no Hiragana Daisuki

nes

Obocchama-kun

nes