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- Oddworld: Munch's Oddysee
- Oddworld: Stranger's Wrath
- Of Orcs and Men
- Onimusha 3
- Operation Flashpoint: Dragon Rising
- Operation Flashpoint: Red River
- Orcs Must Die!
- Overlord
- Overlord II
Read more about this topic: List Of XInput Enabled Games
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Read more about this topic: List Of XInput Enabled Games