It shouldn't come as a surprise that Metal Gear Solid 4 is a system-seller. The PS3 exclusive has managed to beat sales records in Japan, becoming the best-selling PS3 game in the territory. (The previous record was held by Minna no Golf 5 .) MGS4 sold 476,334 copies in four days. That's slightly less than the Japanese launch of Metal Gear Solid 3 , but more than the launches of MGS and MGS2 . Considering PS3's smaller install base, this is a fantastic achievement. ...