Ocean Hexplore [PC]
Hexplore is set in the year 1000A.D. The Grand Master of Black Magicians,- Developer: Atari
- Type: Role-Playing
- Publisher: I-Motion, Inc.
- Released: 01 Jan 1998
Price: NA
Odin Sphere [PS2]
- Developer:
- Type: Role-Playing
- Publisher: Vanillaware
- Released: 22 May 2007
Price: NA
OKAGE: Shadow King [PS2]
Me and Satan King is a satirical RPG where you play as a small boy with an evil spirit trapped in your shadow.
- Developer: Sony
- Type: Role-Playing
- Publisher: Zener Works
- Released: 03 Oct 2001
Price: NA
Onimusha Tactics [GBA]
Capcom is publishing a tactical RPG set in the Onimusha universe.
- Developer: Capcom
- Type: Role-Playing
- Publisher: Capcom Co., Ltd.
- Released: 11 Nov 2003
Price: NA
Operation Darkness [X360]
- Developer: Atlus
- Type: Role-Playing
- Publisher: Success
- Released: 24 Jun 2008
Price: NA
Opoona [Wii]
- Developer: KOEI Corporation
- Type: Role-Playing
- Publisher: Omega Force
- Released: 25 Mar 2008
Price: NA
Orcs & Elves [DS]
- Developer:
- Type: Role-Playing
- Publisher: Id Software
- Released: 15 Nov 2007
Price: NA
Orphen: Scion of Sorcery [PS2]
Though the game is in many ways flawed, Orphen: Scion of Sorcery's interesting core game system often manages to transcend the game's poor production and...
- Developer: Activision
- Type: Role-Playing
- Publisher: Kadokawa
- Released: 26 Oct 2000
Price: NA
Overlord [X360]
- Developer: Codemasters
- Type: Role-Playing
- Publisher: Triumph Studios
- Released: 26 Jun 2007
Price: NA
Overlord II [PS3]
- Developer:
- Type: Role-Playing
- Publisher: Triumph Studios
- Released: 23 Jun 2009
Price: NA