A–Z
Games starting with O
70 games, in alphabetical order.
CIB 
ObsCure
2004 · 3 platforms
eBay from $229
ObsCure II
2007 · Windows
eBay from $13
SEALED 
Observer
2017 · Windows
eBay from $24
Octopath Traveler
2018 · Nintendo Switch
eBay from $38
Octopath Traveler II
2023 · Windows
eBay from $35
CIB 
Oddworld: Abe's Exoddus
1998 · 3 platforms
eBay from $55
CIB 
Oddworld: Abe's Oddysee
1997 · 6 platforms
eBay from $65
Oddworld: Munch's Oddysee
2001 · 7 platforms
eBay from $10
Oddworld: Soulstorm
2021 · 4 platforms
eBay from $33
Oddworld: Stranger's Wrath
2005 · 8 platforms
eBay from $53
SEALED 
Odin Sphere
2007 · 3 platforms
eBay from $162
Of Orcs and Men
2012 · 3 platforms
eBay from $70
Off
2008 · 2 platforms
eBay from $20
Ogre Battle 64: Person of Lordly Caliber
1999 · 2 platforms
eBay from $72
Ogre Battle: The March of the Black Queen
1993 · SNES
eBay from $354
SEALED 
Oh No! More Lemmings
1991 · 6 platforms
eBay from $23
CIB 
Oil's Well
1983 · 5 platforms
eBay from $249
Olympic Gold
1992 · 3 platforms
eBay from $22
Olympic Summer Games
1996 · SNES
eBay from $24
CIB 
Omega Boost
1999 · PlayStation
eBay from $126
Omerta
2003 · PC
eBay from $21
Omerta – City of Gangsters
2013 · 3 platforms
eBay from $30
One on One
1983 · 4 platforms
eBay from $27
One Piece: Grand Adventure
2006 · 2 platforms
eBay from $80
CIB 
One Piece: Grand Battle!
2005 · 2 platforms
eBay from $63
CIB 
One Piece: Pirate Warriors
2012 · PlayStation 3
eBay from $70
One Piece: Pirate Warriors 2
2013 · 2 platforms
eBay from $10
SEALED 
One Piece: World Seeker
2019 · 3 platforms
eBay from $55
One-Punch Man: A Hero Nobody Knows
2020 · 3 platforms
eBay from $30
One: Kagayaku Kisetsu e
1998 · 2 platforms
eBay from $17
CIB 
Oni
2001 · 3 platforms
eBay from $29
CIB 
Onimusha 2: Samurai's Destiny
2002 · 3 platforms
eBay from $40
Onimusha 3: Demon Siege
2004 · 2 platforms
eBay from $103
Onimusha: Dawn of Dreams
2006 · PlayStation 2
eBay from $100
Onimusha: Warlords
2001 · PlayStation 2
eBay from $27
Onimusha: Way of the Sword
2026 · 4 platforms
eBay from $85
SEALED 
The Ooze
1995 · Mega Drive
eBay from $630
Operation C
1991 · Game Boy
eBay from $119
Operation Flashpoint: Cold War Crisis
2001 · 4 platforms
eBay from $17
Operation Flashpoint: Dragon Rising
2009 · 3 platforms
eBay from $11
Operation Thunderbolt
1988 · 6 platforms
eBay from $38
Operation WinBack
1999 · 2 platforms
eBay from $38
CIB 
Operation Wolf
1987 · 10 platforms
eBay from $108
The Operative: No One Lives Forever
2000 · 3 platforms
eBay from $48
Orbiter
2000 · Windows
eBay from $13
The Order: 1886
2015 · PlayStation 4
eBay from $20
The Oregon Trail
1971 · 6 platforms
Ori and the Blind Forest
2015 · 3 platforms
eBay from $55