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Microtransaction is a business model where users can purchase virtual goods via micropayments. Microtransactions are often used in free-to-play games to provide a revenue source for the developers. While microtransactions are a staple of the mobile app market, they are also available on traditional computer platforms such as Valve Corporation's Steam platform. Free-to-play games that include a microtransaction model are sometimes referred to as "freemium". "Pay-to-win" is sometimes used as a derogatory term to refer to games where paying for in-game items can give the player an advantage over other players, particularly if the items cannot be obtained by free means. The objective with a free-to-play microtransaction model is to get more players into the game and provide desirable items or features that players can purchase if they are interested in them - it is hoped that in the long term the profits from a microtransaction system will outweigh the profits from a one-time-purchase game. Items and features available by microtransaction can range from cosmetic (such as decorative character attire) to functional (such as weapons and items). Some games allow players to purchase items that can be acquired through normal means, but some games include items that can only be obtained through microtransaction. Some developers ensure that only cosmetic items are available this way to keep gameplay fair. ==Channels== Microtransactions are most commonly provided through a custom store interface placed inside the app the items are being sold for. Apple Inc. provides a framework dubbed "in-app purchases" for initiating and processing transactions.〔(【引用サイトリンク】title=In-App Purchase for Developers - Apple Developer )〕 Google's framework for the same use is referred to as "in-app billing",〔(【引用サイトリンク】title=Google Play In-app Billing )〕 named more from the developer's point of view. Apple and Google both take 30 percent of all revenue generated by microtransactions sold through in-app purchases in their respective app stores.〔(Apple's App Store: An economy for 1 percent of developers ). CNET. Retrieved 9 July 2014.〕〔(【引用サイトリンク】title=Transaction Fees – Google Play for Developers Help )〕 Steam offers support for microtransactions in games on its platform through the Steamworks SDK.〔(【引用サイトリンク】title=STEAMWORKS - Microtransactions )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「microtransaction」の詳細全文を読む スポンサード リンク
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