[null,null,["最終更新日 2020-10-27 UTC。"],[],[],null,["# CD Projekt RED reduces update size by 90% and increases update rates by 10% with Play Asset Delivery\n\nBased in Warsaw, Poland, game developer CD Projekt RED (CDPR) reimagined their\nmini-game in The Witcher 3, [GWENT: The Witcher Card Game](https://play.google.com/store/apps/details?id=com.cdprojektred.gwent),\nto launch as a standalone free-to-play title on Google Play in March of 2020.\nWith a large initial file size and regular updates requiring additional device\nstorage, users were often forced to reinstall the full game in order to receive\nan updated version. This was the most prominent point of frustration among the\ngame's community. In an effort to help with differential patching,\nCDPR has seen great success by implementing Play Asset Delivery.\n**GWENT: The Witcher Card Game by CD Projekt RED**\n\nWhat they did\n-------------\n\nCDPR was an early partner to implement Play Asset Delivery (PAD). With three\ndifferent delivery modes available, they initially implemented on-demand,\nallowing for asset packs to be installed while the game is running. CDPR then\nadopted fast-follow delivery, automatically serving over 40 asset packs that\nrange in size from 4 MB to 160 MB each, as soon as the game was installed.\nThe benefit of using fast-follow is it permits downloads to happen in the\nbackground, even if the user has not opened the game. Upon the next open, the\ngame is updated and ready to be played right away. \"It's the only reliable\nsolution that provides us with all key features: delta patching, in-game and\nin-store downloading, and dynamic updates,\" said Maciej Włodarkiewicz,\nLead Producer.\n\nResults\n-------\n\nCDPR was particularly pleased with the way PAD helped streamline app updates.\nThey saw major improvement in update rates and reduction in reinstalls thanks\nto Play Asset Delivery auto-updates and delta patching. With this, CDPR was\nable to reduce their update size by 90%. An update that used to require download\nand extra storage space of more than 2GB now only takes a couple hundred MB.\n\nAlmost immediately after implementing PAD, CDPR saw a reduction of reinstalls\nand an increase in the speed of players updating to the latest app version.\nBetween app versions 7.0 to 7.1, they saw almost a 10% lift in the percentage of\nactive devices updated to the latest app version and a 4.8x reduction in\nuninstalls on day 1 of the new version release. Using fast-follow and background\ndownloads, GWENT was able to save users an average of 8 minutes of idle wait\ntime, compared to using a content delivery network.\n\nGet started\n-----------\n\nGet started today by learning more about [Play Asset Delivery](/guide/app-bundle/asset-delivery)."]]