SingStar is a series of music video games developed by London Studio and published by Sony Computer Entertainment for the PlayStation 2 and PlayStation 3 video game consoles. Gameplay in the SingStar games requires players to sing along to music in order to score points, using SingStar-specific USB microphones which ship with the game. Over 70 different SingStar SKUs have been released worldwide, featuring over 1,500 disc-based songs. There are usually 10-20 new English single tracks and one song pack on the SingStore every fortnight with usually double the amount of additions at Christmas.