||[[Obliterator]]|| 1989 || Melbourne House || No ||No|| Converted by Phantomz || [[Media:Obliterator.rar| Obliterator.rar]]
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||[[Oceano (v1.1)]]|| 2015 || Egotrip || Yes ||No|| Converted by CraigsBar || [[Media:Oceano.rar | Oceano.rar]]
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||[[Off Shore Warrior]]|| 1989 || Titus || No ||No|| Converted by Phantomz || [[Media:Off Shore Warrior.rar | Off Shore Warrior.rar]]
||[[Oh Mummy !]]|| 1984 || Amsoft || No ||No|| Converted by Phantomz<br/>J1B1 = Skip highscore table || [[Media:Oh Mummy !.rar | Oh Mummy !.rar]]
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||[[On The Run*]]<sup>(a)</sup>|| 1985 || Design Design || No ||No|| Converted by Phantomz<br/>Use joypad 2 and the Console Pause Button for Menu Options. J2B1 = Sound on/off || [[Media:On The Run.rar | On The Run.rar]]
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||[[One Man And His Droid]]|| 1985 || Mastertronic || No ||No|| Converted by token<br/>C64 screen as loading screen. || [[Media:One Man And His Droid.rar | One Man And His Droid.rar]]