Sony has launched its January PlayStation Store sale today offering massive discounts on a huge range of games including Mass Effect 3, the Assassin's Creed series, Rayman Origins, the LEGO games, Batman Arkham City, LittleBigPlanet, Mirror's Edge, Dead Space, Crysis, Ni No Kuni, Dishonored and many more.
The deals have different end points – Jan 2nd, 8th, 15th, and 22nd and some titles aren't available in all countries. You can find out the full roundup of offers on the PlayStation Blog, it's a pretty extensive list.
Unfortunately no PS4 games are included in the sale.