Genshin Impact and RPGs on iPhone Duo

Genshin Impact should run on iPhone Duo on paper, since the Duo appears to clear the requirements on the game's App Store listing, though Apple doesn't publish the Duo's RAM, and that listing doesn't mention iPhone Duo as of Nov 11, 2026. Here are five RPGs, what their listings and developers say, and one catch each. Nothing here comes from testing.

What the Duo brings to heavy 3D games

Apple's iPhone Duo spec page lists an A20 Pro with a 6-core CPU, a 7-core GPU and hardware-accelerated ray tracing, plus ProMotion up to 120Hz on both the 7.6-inch inner display and the 5.4-inch outer display. Apple says the A20 Pro and a custom vapor chamber give the Duo up to 35 percent better sustained performance than iPhone 17 Pro, per its October newsroom post on Duo apps.

Apps built with the iOS 26 SDK or earlier sit in the center of the inner display with empty margins on each side, while apps built with the iOS 27.1 SDK or later fill the whole screen and can earn the "Made for iPhone Duo" label, MacRumors reports. None of the four gacha listings below says which SDK it uses, so how each one fills the inner screen isn't documented.

What reviewers found about heat

Credit first: Tech Advisor's iPhone Duo review found the Duo warmed up more than iPhone 18 Pro under sustained load but never got hot or uncomfortable. The same review lists a 63.3% result in 3DMark's Wild Life Extreme Stress Test.

Mrwhosetheboss was more cautious. In his 20-minute stress test the Duo scored below iPhone 18 Pro Max, and he found it trapped heat when closed, MacRumors reports. See our summary of his review. More in iPhone Duo performance and thermals.

The picks

Genshin Impact

Genshin Impact is free, with in-app purchases from $0.99 to $99.99 as of Nov 11, 2026, according to its App Store listing. The listing recommends an iPhone 12 or later with an A13 chip or better and 4 GB of RAM, and asks for at least 3 GB of RAM at minimum. Apple doesn't list the Duo's RAM on its spec page.

Pocket Gamer reported in January 2021 that controller support was coming to iOS with version 1.3, and a 120 FPS option for some devices followed in version 2.2, GSMArena reported. Neither the listing nor its release notes say whether that option covers the Duo. The catch is storage: the download is listed at 3.7 GB, but the listing's own requirements ask for 40 GB or more of free space, or 60 GB for the recommended spec.

Honkai: Star Rail

Honkai: Star Rail is free, with in-app purchases from $0.99 to $99.99 as of Nov 11, 2026, per its App Store listing. The listing shows a 3.8 GB download, iOS 13.0 or later, and version 4.6.1 from Sep 29, with no mention of iPhone Duo or controllers. The catch is spending: the listing says the game includes paid random virtual items.

Zenless Zone Zero

Zenless Zone Zero was one of two games demoed to press after Apple's September keynote, mobilegamer.biz reports. Apple says its action works in every way of holding the Duo, with controls that adapt to each position, and said in October that the Duo update would arrive the following month, per its newsroom post.

The catch is timing. The US App Store listing shows version 3.3.1 at 3.9 GB, needing iOS 15.0 or later, but its release notes don't mention iPhone Duo, so it isn't clear from the developer's own text whether that update has landed.

Wuthering Waves

Kuro Games' Wuthering Waves is free, with in-app purchases from $0.99 to $99.99 as of Nov 11, 2026, per its App Store listing. The listing shows a 3.4 GB download, iOS 14.0 or later, and version 3.7.2 from Oct 19, whose only note is a fix for crashes on certain iOS devices. The catch: the listing doesn't mention iPhone Duo, controllers or 120fps.

UnGodly

Apple calls it a dark fantasy RPG from Azra Games whose controls and view adjust for each display, including a taller view when the Duo is closed, per its newsroom post. Pocket Gamer reports a Nov 11 launch on iOS and Android with iPhone Duo support confirmed.

PocketGamer.biz reports it will run at up to 120fps on the Duo and iPhone 18 Pro and supports iOS 27 auto resizability, so play continues open or closed. The App Store listing shows it as free with in-app purchases from $4.99 to $89.99 as of Nov 11, 2026, a 3.8 GB download needing iOS 18.0 or later, and a loot box disclosure. The catch: it was still listed for pre-registration, expected Nov 11, as of Nov 11, 2026, so there are no player reviews yet.

Bottom line

If you want an RPG that Apple says uses the Duo's folding design, UnGodly and Zenless Zone Zero are the safer bets, with the caveat that Zenless Zone Zero's update notes don't confirm it yet. Genshin Impact, Honkai: Star Rail and Wuthering Waves should run on paper, but none promises an inner-screen layout. We'll update this guide when any of them adds iPhone Duo to its release notes.

For more games, see the best games on iPhone Duo, and for pads and grips, game controllers for iPhone Duo. Which RPG are you playing on the Duo?