Pre-order sales for EA Inc.’s Dead Space 3 for Sony Corp.’s Playstation 3 and Microsoft Corp.’s Xbox 360 ranked as the top-selling game titles at Best Buy Co. Inc.’s online division pending release of the title this week. This week, the Dead Space 3 Xbox 360 SKU ranked as the No. 1 best-selling pre-order product at BestBuy.com. The PS3 SKU ranked at No. 4 in the same period.