 Supporters of online passes and publishers using them argue that requiring buyers of used games to pay extra for access to online content and services is a more fair system for paying the costs required to maintain online resources.Opponents contend that adoption of online pass systems may lead to removing more essential functionality from used games and possibly even preventing the resale of video games.38 Studios founder Curt Schilling justified the use of an online pass to unlock the seven-part bonus quest "House of Valor" on the single-player RPG "Kingdoms of Amalur