Which gaming platform first introduced machine learning-based recommendation algorithms that analyzed both gameplay patterns AND social connections to suggest virtual items for purchase?

The virtual item marketplace has transformed how gamers purchase and trade in-game assets. As virtual economies grow into billion-dollar industries, gaming platforms have innovated with sophisticated recommendation systems and machine learning algorithms to personalize the shopping experience. Test your knowledge about this fascinating intersection of gaming and retail innovation!

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Steam, with its 2014 Discovery Update that revolutionized how games and in-game items were recommended to players
PlayStation Network, with its 2016 Smart Suggestions system that connected player behavior with store recommendations
Xbox Live Marketplace, which pioneered behavioral analysis for item recommendations in 2015
Epic Games Store, whose 2018 launch included the first AI-powered recommendation engine for virtual items