Indeed, a number of major studios are currently abandoning their engines in favor of Unreal Engine. Among them, for example, is CD Projekt RED, which will develop all of its future RPGs, including the next Cyberpunk game and several The Witcher games, on UE5. Prior to this, the Polish studio used its proprietary REDengine.
In addition, the creator of the Yakuza series, Ryu Ga Gotoku Studio, also recently shared it's considering shifting from The Dragon Engine to Unreal.
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