MTV Multiplayer reports the two spin-offs created to promote Serious Sam 3 are on their way to Xbox Live Arcade. Side-scrolling shooter Serious Sam: Double D and prequel Serious Sam 3: BFE are both headed to the service in northern autumn, with the former boasting greater gameplay variety and two player co-op in addition to other bonuses like new weapons. Both titles were previously available only for PC, despite the core game’s multi-platform release.
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