Wyrdness on 23 June 2019
Their in house engines are clearly built for their hardware so it's likely that these engines are built alongside the hardware as it's being developed this not only allows them to do what they want for most part but also means they don't need to pay any royalties. I can only see them using third party engines for games where the is a straight forward template where not much tinkering is required to execute the ideas they have but for games like Zelda and Mario where the are a number of ideas and concepts coming together I doubt they'd used them.
