Index of Windows games (O)

This is an index of Microsoft Windows games.

This list has been split into multiple pages. Please use the Table of Contents to browse it.

Title	Released	Developer	Publisher
O.D.T.	1998	Psygnosis	Psygnosis
O.R.B: Off-World Resource Base	2002	Strategy First	Strategy First, Mindscape
Oasis	2005	Mind Control Software	PlayFirst
ObsCure	2004	Hydravision Entertainment	DreamCatcher Interactive
ObsCure II	2008	Hydravision Entertainment	Playlogic Entertainment
Obsidian	1996	Rocket Science Games	SegaSoft
Oddballz	1996	PF Magic	PF Magic
Oddworld: Abe's Exoddus	1998	Oddworld Inhabitants	GT Interactive
Oddworld: Abe's Oddysee	1997	Oddworld Inhabitants	GT Interactive
Odell Down Under	1995	MECC	SoftKey
Odyssey: The Search for Ulysses	2000	Cryo Interactive	Cryo Interactive
The Office	2009	MumboJumbo	NBC
Oh No! More Lemmings	1991	DMA Design	Psygnosis
Omega	2003
The Omega Stone	2003	Omni Creative	DreamCatcher Interactive
Omikron: The Nomad Soul	1999	Quantic Dream	Eidos Interactive
One Must Fall: Battlegrounds	2003	Diversions Entertainment	Diversions Publishing
onEscapee	1997	Invictus Games, Ltd.	Sadeness Software
Oni	2001	Bungie	Gathering of Developers
Onimusha 3: Demon Siege	2004	Capcom	Capcom
Onimusha: Warlords	2001	Capcom	Capcom
Online Bomberman	2004	Hudson Soft, MGAME Corp.	Wizgate, Fullerton
Onlineworms	2001	Wizgate	Wizgate
Only If	2014	Creability	Creability
Oolite	2006	Giles Williams
Open Kart	2001	Microids	Microids
OpenArena	2005	OpenArena team
Operation Flashpoint: Cold War Crisis	2001	Bohemia Interactive Studio	Codemasters
Operation Flashpoint: Dragon Rising	2009	Codemasters	Codemasters
Operation: Blockade	2002	Screaming Games	Infogrames
Operation: Matriarchy	2005	MADIA Entertainment	Buka Entertainment
Operation Neptune	1995	The Learning Company	The Learning Company
The Operative: No One Lives Forever	2000	Monolith Productions	Fox Interactive
Oppai Slider 2	2005	Illusion	Illusion
The Orange Box	2007	Valve Corporation	Valve Corporation
Orcs Must Die!	2011	Robot Entertainment
Orbiter	2000	Martin Schweiger
Order of War	2009	Wargaming.net	Square Enix
The Oregon Trail	1993	MECC	Brøderbund
Oretachi ni Tsubasa wa Nai	2009	Navel	Navel
Original War	2001	Altar Interactive	Virgin Interactive
The Orion Conspiracy	1995	Divide By Zero	Domark
Osmos	2009	Hemisphere Games	Hemisphere Games
Ostrich Island	2015	MeDungeon, Ltd.	MeDungeon, Ltd.
OttoMatic	2001	Pangea Software	Aspyr Media
Out of the Park Baseball	2008	OOTP Developments	OOTP Developments
Outcast	1999	Appeal	Infogrames
The Outforce	2000	O3 Games	Pan Interactive, Strategy First
Outlaw Golf	2002	Hypnotix	Global Star Software
Outlaws	1997	LucasArts	LucasArts
Outlive	2001	Continuum Entertainment	Continuum Entertainment, Take-Two Interactive
Outpost	1994	Sierra On-Line	Sierra On-Line
Outpost 2	1997	Dynamix	Sierra On-Line
Outpost Kaloki	2004	NinjaBee	Microsoft Game Studios
OutRun 2006: Coast 2 Coast	2006	Sumo Digital	Sega
Outwars	1998	SingleTrac	Microsoft
Over the Hedge	2006	Edge of Reality	Activision
Overboard!	1997	Psygnosis	Psygnosis
Overclocked: A History of Violence	2008	House of Tales	Lighthouse Interactive
Overlord	2007	Triumph Studios	Codemasters
Overlord II	2009	Triumph Studios	Codemasters
Overlord: Raising Hell	2008	Triumph Studios	Codemasters