Pokémon Ultra Sun And Moon are packed with secrets to discover, but one of these is especially touching if you're a seasoned Nintendo fan.
Developer Game Freak has hidden a secret dedication to the late Nintendo president Satoru Iwata, which requires quite a bit of effort to access. Firstly, you'll need to make your way to the Game Freak office in the city of HeaHea. You'll need to be holding a Pokémon transferred from Pokémon Silver, which is of course available to download via the 3DS eShop (the other titles available for download unlock different comments unrelated to Iwata).
Once you've done all of this, the following comment is revealed:
When we were having trouble fitting all the data in for Gold and Silver, and we were really in a pinch, this amazing guy came along and made a program for us that solved all our problems. He went on to become the amazing president of a real big company soon after that, too.
Iwata's name isn't mentioned explicitly, but it's obvious the comment is about him. The story goes that Iwata wanted Gold and Silver to include the Kanto region as well as the new Johto territory, and to make this possible he came up with a new compression system to ensure the team at Game Freak could do it. This tribute is a neat way of recognising the impact he had on the game.
Nintendo's former president was also honoured recently with a hidden game on the Switch.