Rumour: Infinity Ward developing Ghost-based Call of Duty 4 prequel

According to a story on thisisxbox.com, Infinity Ward is developing a prequel based on Ghost from Modern Warfare 2.

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Charlie Intel] Activision says Modern Warfare II premium sales were 'significantly higher' this year compared to Vanguard's Q1. In-game MTX sales in Call of Duty also grew year-over-year. : r/ModernWarfareII

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