Sega has unwrapped a special holiday treat for PlayStation Network users today. Until January 7, all Sega downloads for PS3 and PSP from the PlayStation Store will be marked down 40 percent. Yes! That Sonic Unleashed DLC is finally within reach! In all seriousness, this is a prime opportunity to stock up on some decent PSP games, like Crush ($9.59). Or, haven't nabbed the Valkyria Chronicles DLC yet? Now you have no excuse! The full list of discounted games and add-ons is posted after the break.