Somebody at Microsoft saw Nintendo put an $80 USD price tag on Mario Kart and thought "ah yes we can also do this with our strong IPs" so the first game they are doing this with is the sequel to a game most famous for its name being confused with an indie game that was actually popular.
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https://www.gamespot.com/articles/gta-6-costing-as-much-as-100-could-help-video-game-industry-rebound-in-2025-analyst-says/1100-6528832/