All known Mega Drive games
1,223 games from Wikipedia, Wikidata, MobyGames and players' collections. Most are basic entries that list facts from public sources.
Games
- Old Towers2019
- Olympic Gold1992
- Olympic Summer Games1996
- Onslaught1989
- Operation Europe: Path to Victory1993
- Osomatsu-kun: Hachamecha Gekijō1988
- Out Run1986
- Out Run 20191993
- Outback Joey1993
- Outlander1993
- OutRun
- OutRunners1992
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