List of arcade video games: O List of arcade video games: O List of arcade video games: O

| Title | Alternate_Titles | Year_ | Manufacturer | Genres | Max_Players_ |
|---|---|---|---|---|---|
| Operation Thunderbolt | — | 1988 | Taito | Shooting gallery | 2 |
| Operation Tiger | — | 1998 | Taito | Shooting gallery | 2 |
| Operation Wolf | — | 1987 | Taito | Shooting gallery | 2 |
| Operation Wolf 3 | — | 1994 | Taito | Shooting gallery | 2 |
| Orbit | — | 1978 | Atari | Multi-directional shooter | 2 |
| Ordyne | — | 1988 | Namco | Scrolling shooter | 2 |
| Oriental Legend | — | 1997 | International Game System | Beat `em up | 4 |
| Osman | Cannon Dancer | 1996 | Mitchell Corporation | Platformer | 1 |
| Otomedius | — | 2007 | Konami | Scrolling shooter |  |
| Outfoxies, The | — | 1995 | Namco | Shoot`em up/ , Fighting game | 2 |
| Outlaw | — | 1976 | Atari | Shooter | 1 |
| OutRun | — | 1986 | Sega AM2 | Racing | 1 |
| Out Zone | — | 1990 | Toaplan | Scrolling shooter | 2 |