NES:O

Games

• Obocchamakun
• Ochin ni Toshi Puzzle Tonjan!?
• Oishinbo
• Olympic IQ
• Onyanko Town
• Operation Secret Storm
• Operation Wolf
• Orb 3-D
• Osomatsu-Kun: Back to Zami no Deppa
• Otaku no Seiza: An Adventure in the Otaku Galaxy
• Othello
• Othello (HES)
• Outlanders
• Over Horizon
• Overlord