An early innovator of the digital distribution idea on the PC was Stardock. In 2001 Stardock released the Stardock Central to digitally distribute and sell its own PC titles, followed by a service called Drengin.net with a yearly subscription pay model in summer 2003. In 2004, the subscription model was substituted by TotalGaming.net which allowed individual purchases or pay an upfront fee for tokens which allowed them to purchase games at a discount.