Roblox is a massively multiplayer online platform and game creation system that allows users to design, share, and play games created by other users. Rather than a single game, it is an ecosystem of millions of user-generated experiences spanning nearly every genre, from obstacle courses and roleplays to shooters and simulators. Players use a virtual currency called Robux to purchase avatar items, accessories, and in-experience content.\n\nFirst launched in 2006, Roblox grew into one of the most popular online platforms in the world, particularly among younger audiences. The platform is available on PC, mobile devices, Xbox, PlayStation, and Meta Quest headsets. Its social features, avatar customization system, and constant stream of new user-created content have kept its player base active for nearly two decades.\n\nThe economy around Roblox is substantial, with rare limited-edition avatar items, accessories, and account collectibles trading at significant value. Items earned or purchased through the platform — including exclusive limiteds and high-value accounts — are widely sought after in secondary markets.