The Department of Justice (DOJ) is probing key revelations from the antitrust trial between Apple and Epic Games in May, according to the report, in which the "Fortnite" maker had argued that Apple had given a free pass to Roblox, whose app lets people pick from a selection of games to play.
Following this, Roblox had removed reference to the word "game" and changed it to "experiences", the Information reported.
The DOJ recently asked Roblox why it made the language change and also wants to know whether Apple's 2019 launch of its Arcade game app store made it more difficult for game developers to compete with the iPhone maker, according to the report.
Apple, DOJ did not immediately respond to Reuters requests for comment. Epic Games declined to comment.
The tech news website had reported in late October that the DOJ was accelerating its two-year-old antitrust probe on Apple in the last several months, increasing the likelihood of a lawsuit.
(Reporting by Eva Mathews in Bengaluru; Editing by Ramakrishnan M.)