Apple opens the App Store to retro game emulators
Note that this App Store policy change is global, not only to comply with the EU's Digital Markets Act.
You can read the updated policy directly, but The Verge breaks it down:
The move should allow the retro console emulators already on Android — at least those that are left — to bring their apps to the iPhone. Game emulators have long been banned from iOS, leaving iPhone owners in search of workarounds via jailbreaking or other workarounds. They're also one of the key reasons, so far, that iPhone owners in the European Union might check out third-party app stores now that they're allowed in the region. Apple's change today could head that off.
There goes the only reason I'd ever be interested in a third-party marketplace. I suspect I'm not alone in that.