Re: Pokémon Yellow

I downloaded it from the AppStore, so I thought it was the official release.

Delta uses Gambatte for GB emulation, and while that project is no longer under active development, it should still be able to play Pokemon Yellow all the way through. Are you using the official Delta release or one of the clones? The real Delta emulator is only available through Altstore or sideloading from its Github repository.

https://altstore.io
https://github.com/rileytestut/Delta