Dead Rising 2: Case West set for December - GameSpot

Capcom sets release window for Xbox 360-exclusive addendum to zombie action game, confirms return of photography gameplay mechanic.
Dead Rising 2: Case West brings Chuck Greene and Frank West team up for downloadable co-op zombie destruction.

Dead Rising 2: Case West, Dead Rising Wiki

Dead Rising 2: Case Zero infects Xbox Live August 31 - GameSpot

Dead Rising 2: Case West, Dead Rising Wiki

Dead Rising 2: Case Zero, Dead Rising Wiki

Dead Rising 2: Case West Playtest: Double Trouble - Siliconera

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Dead Rising 2: Case West Coming December 27

Dead Rising 2 Skills Packs, Dead Rising Wiki

Dead Rising 2: Case West set for December - GameSpot

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Dead Rising 2: Case West, Dead Rising Wiki

Dead Rising 2: Case Zero

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Dead Rising 2: Off the Record - Wikipedia