Gameboy Advance ROMS - O

Region Game Title
Japan Ochainu Kururin
Japan Ochainu No Bouken Jima (sUppLeX)
Japan Ochaken No Heya
Japan Ochaken No Yumebouken
Germany Oddworld - Munch's Oddysee
United States of America Oddworld - Munch's Oddysee
Japan Ohanaya-san Monogatari (Now)
Japan Ohanaya-san Ni Narou! (kaMX)
Japan Ojaru Maru - Tsuki Hikari Machi Tour De Ojaru
Japan Okaitoku Series 5 - Puzzle & Tantei Collection (Patience)
Japan Okuman Chouja Game
Korea One Piece - Going Baseball Haejeok Yaku
Japan One Piece - Mezase! King Of Paris (Cezar)
Japan One Piece - Nanatsu Shima No Daihihou (Cezar)
Japan One Piece Dragon Dream
Japan One Piece Going Baseball (Eurasia)
United States of America One Piece Going Baseball [j] Eurasia-
Europe Onimusha Tactics (Patience)
Japan Onimusha Tactics (Eurasia)
United States of America Onimusha Tactics
Japan Onmyou Taisenki Zeroshiki
Europe Open Season
Europe Open Season (Sir VG)
United States of America Open Season
United States of America Operation Armored Liberty
Japan Oriental Blue - Ao No Tengai (Cezar)
Japan Oshaberi Inco Club (Chakky)
Japan Oshare Princess (Chakky)
Japan Oshare Princess 2 And Doubutsu Kyaranabi
Japan Oshare Princess 3
Japan Oshare Princess 5 (Supplex)
Japan Oshare Princess EX Primo Debut Monogatari & Renai Uranai Daisakusen
Japan Oshare Wanko (Supplex)
Germany Ottifanten Pinball
Japan Ougon No Taiyo (Eurasia)
Japan Ougon No Taiyou - Shitsu Warate Jidai (Eurasia)
Japan Our Breeding Series - My Ameba (Eurasia)
Japan Our Breeding Series - My Beetle (Eurasia)
Europe Over The Hedge
United States of America Over The Hedge
United States of America Over The Hedge - Beesten Bij De Buren (N)
Europe Over The Hedge - Hammy Goes Nuts
United States of America Over The Hedge - Hammy Goes Nuts
United States of America Ozzy & Drix