Sony announced this morning that it shipped over 8 million units of the Move controller to retailers worldwide as of April 3. The company also noted that the PlayStation Move "ecosystem," which includes the PS Eye, Move navigation controller and Move-friendly software, "continues to see strong momentum at retail." (The company had shipped 4.1 million Moves by last November.) Sony also mentioned that PS3 sales have reached 50 million units worldwide.

Interestingly, the Sharp Shooter peripheral had a 40 percent attach rate with Killzone 3 "among key retailers." Bob McKenzie, senior vice president of merchandising for GameStop said, "Due to the demand for the PlayStation Move motion controller, we've been struggling to keep units in stock in our U.S. GameStop stores." Sales were likely assisted by Sony's VP of The Cold Hard Truth, Kevin Butler, using the device in the game's ad campaign.