Objection! Obliterator Ocean Ranger Oh No! More Lemmings Olimpiadas 92: Gimnasia Deportiva Olmang Jolmang Paradise Omega Omni-Play Horse Racing Omnicron Conspiracy On Disk Monthly's Circuitry One Must Fall 2097 Onslaught OnTarget Open Transport Tycoon Deluxe Operación Cyborg Operation Body Count Operation Combat II: By Land, Sea & Air Operation Market Garden: Drive on Arnhem, September 1944 Operation Spacehog Operation: Airlift Oregon Trail Deluxe Origamo Ortotris Osbit Osiris Osmosis Solitaire Out of Cash (Sin Blanca) (ES) Out of This World Out on a LEM OutFox OverKill Overlord Oxyd 2 Oxyd magnum!