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Microsoft is testing new Xbox customization options with Xbox Insiders, including rotating dynamic backgrounds, new library options and the ability to move the Guide menu to the right side. The company is also marking the Xbox 25th anniversary by letting players run 25 original Xbox games on Windows PCs. The PC games are available to users who own or buy digital copies, and Microsoft says all of them now work with keyboard and mouse. The Verge noted that the original Xbox launched on November 15, 2001, and that the brand is again seeking to reinvent itself.