I was wondering how the new App Store rules apply to in-game currencies that are bought on external websites with no in-app links. Presumably these work the same way Kindle or Netflix purchases do?
Currencies are shared across PC and mobile, but some games have restrictions on how you can obtain it:
* In Genshin Impact: if your account was first played / created on mobile, you can only purchase currency on mobile (either platform). Clicking the same button on PC throws an error saying you can only do this on mobile. Other way around (first played on PC) results in an account that can buy currency on all platforms.
* In Hearthstone: There doesn't appear to be a platform limitation for buying in-game packs or stuff; pricing may be different due to regional currency reasons but you can buy on either platform freely. (e.g.: Blizzard's PC marketplace has a handful of currencies but iOS has tens of them with different template prices)
The developer for Genshin is frequently featured by Apple and even has some iOS-exclusive features (e.g.: 120Hz/120FPS is iOS-only), so I assume this was a sort-of privately-negotiated revenue sharing situation.
