Doom 3 on the original xbox has system link co-op! Using 2 consoles you can explore a slightly altered campaign with a friend, because the mirror scene scares you. : r/originalxbox
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DOOM 3 on Steam
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![Doom 3 (OpenCoop) [PC/Steam] - (4-players) Co-op Gameplay #1 - YouTube](https://i.ytimg.com/vi/Aa8Te7eCoqI/maxresdefault.jpg "Doom 3 (OpenCoop) [PC/Steam] - (4-players) Co-op Gameplay #1 - YouTube")
Doom 3 (OpenCoop) [PC/Steam] - (4-players) Co-op Gameplay #1 - YouTube
OpenCoop - Doom III - GameFront
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Doom 3 - Wikipedia
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Original Xbox co-op dialog differences? - Doom 3 - Doomworld
Doom 3 Splitscreen Edition mod - ModDB
Last man Standing Multiplayer Coop for Doom3
Doom III: Resurrection of Evil Windows, X360 game - ModDB
Doom 3 (Xbox) - Co-op Intro - YouTube
GameSpy: How To Sneak Friends Into Your Single-Player Games - Page 1
Steam Community :: Guide :: DOOM 3 open coop mod
