Unity Technologies has stated that PlayStation, Xbox, and Nintendo will pay the company's new runtime fee on behalf of game developers.
A new FAQ has been shared by Unity Technologies, which answers questions regarding the company's recent change in pricing plan for its game development engine.
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Steam is just a storefront, not a publisher. And traditionally Valve only publishes their own games. While Nintendo, Microsoft and Sony are more broad game publishers. Imagine Casio trying to charge the watch store for every time you look at the time in the watch you bought there. Complete bonkers.