Apple is allowing emulators on the App Store. Here's what's arrived, and what's on the way to play your favorite retro games on your iPhone, updated on September 13 with info on MAME4iOS submissions.
iPhone emulators
The early April changes to the App Store Review Guidelines reversed a rule that practically banned emulators from the App Store. After the rule was removed, it was expected that there would be a sudden rush of emulators being submitted to Apple for inclusion in the digital storefront.
Emulators for the iPhone have existed for a while, but outside of the App Store as a side-loadable app. With Apple's changes, some of the projects are making the transition, and potentially gaining more traction from a larger user base in the process.
We've already seen the likes of Delta transition over, but there are a lot more emulators on the way. With more emulators, there are more potential options for users to emulate older consoles.
Here's what stands a chance of being included in the App Store for retro gamers to enjoy soon. This post is current as of September 13, 2024.
Delta
Delta was one of the first emulators to make it to the App Store. As a Nintendo-centric emulator, it offered support for many game consoles from the company.
The list included the GameBoy Advance, GameBoy Color, Nintendo DS, NES, Super NES, and Nintendo 64. However, there are two elements that are still on the way.
A long-promised major update to Delta on July 11 on the Alt Store brings with it a slew of iPad-based updates, including native iPad support. Previously, you could use the iOS app on iPad as a zoomed-in app.
Skins are being redesigned so that users can have a more comfortable time playing with touch controls on the larger display. Full-screen game support is also included on iPad, along with support for multiple windows, Stage Manager and Split View, and Handoff.
The update also introduced other changes, including better Nintendo DS game compatibility, GBA dual-slot, gestures for common actions, and a variety of app icons.
The first submission of the update was rejected by Apple. Sections cited by Apple include problems with in-app purchases, plus Apple's review team's go-to for something they just don't like -- spam.
However, on July 13, the emulator's 1.6 update with iPad support was given the green light for inclusion in the App Store.
eNES
eNES: NES Emulator Retro Emu to give it the full name, is a lightweight NES retro emulator by Mattia La Spina. It's especially lightweight, as it's less than 2MB in size.
Free in the App Store, it is capable of automatic saving, complete with an auto-loading last save function. It has external support for two controllers, an on-screen controller skin, audio filtering, scanline visualization, and automatic .nes file opening and importing. .
Emu64 XL
Emu64 XL is a Commodore 64 emulator by Raffaele Amuso. Based in Vice, the Versatile Commodore Emulator, it includes a variety of programs written in CBM64 Basic, and allows for users to create their own.
It is also capable of loading .T64 files and .D64 files as virtual floppy disks. There's also a keyboard with the same layout as the original machine.
Emu64 XL is free in the App Store, supporting iPhone, iPad, Mac, and Apple Vision Pro.
Folium
Foliumis an emulator that can play games for Nintendo's Game Boy Advance, Nintendo 3DS, and Nintendo DS. Support for the PlayStation 1 and PlayStation 2, as well as the Sega Genesis are currently under development.
In an X post, the developer confirmed that it was tested on TestFlight, and hoped for imminent inclusion on the App Store itself. As of June 4, it has made it to the App Store, priced at $4.99.
Gamma
Gamma is an emulator that arrived on the iOS and iPadOS App Stores on May 11th. It is a free download with no in-app purchases.
A single-console emulator, Gamma can play back games made for the original Sony PlayStation, or PS1. Its features include save states, save synchronization with the cloud, hardware controller support, and controller skins.
While Gamma is free, there is an in-app option to remove ads for $4.99.
In a series of updates running to July 2, Gamma has new controller skins, support for games with analog controls, four-player local multiplayer, and a variety of fixes.
iDOS
This is a complicated saga. iDOS existed once on the App Store, and was stricken from it. The iDOS emulator is an x86 emulation project, made to play games and run software that uses DOS.
In an April 14 blog post, it is explained that iDOS was resubmitted for review following the policy change. After some issues with the submission because Apple blacklisted iDOS 2, the submission has been performed under iDOS 3.
After an attempt was made to explain the situation, it was rejected again as "Design Spam," due to there being many recent submissions using the same design. The developer is continuing to fight the rejection and is hopeful that it will proceed eventually.
In a June 15th update, Apple told the developer that iDOS is not a retro console and so the rules won't apply to it. Apple said changes could be made and it could be submitted for re-review.
Confusingly, when asked what should be changed to make it compliant, Apple's rep didn't know and couldn't explain what had to be done.
On August 12, it was confirmed that iDOS 3 had been approved for the App Store. It's a free app requiring iOS or iPadOS 12 or later, an Apple Silicon Mac, or Apple Vision Pro.
The app, a front-end for DOSBox, also includes iCloud Drive saving, as well as a new vector-based keyboard instead of a bitmap version.
Ignited
A multi-core emulator, Ignited provides an emulator that improves on the UI of each of the core emulators.
Its support is chiefly Nintendo-centric, including the NES, the Super NES, Nintendo 64, Game Boy, Game Boy Color, Game Boy Advance, and Nintendo DS. It also supports some Sega consoles, including the Genesis, Master System, and Game Gear.
Ignited does have a TestFlight build in testing, but only for patrons of the project. As of September 13,, it is still not in the App Store.
iMSX2
iMSX2 is an emulator designed to play classic MSX and MSX2 games on an iPhone. Published by Enrique Enguix, it can run both games made for the platforms as well as a user's own BASIC programs.
The App Store currently lists iMSX2 as priced at $1.99. It requires iOS 15.0 or later, to run on an iPhone, with it also including support for Apple Vision Pro and an Apple Silicon Mac running macOS 12.0 or later.
MAME4iOS
The mobile counterpart to the well-known MAME emulator, MAME4iOS focuses on arcade gaming, rather than home console games.
In a post to Reddit, maintainer Harakari said they have submitted the app to the App Store for review. However, it failed to make any progress.
In Reddit comments, Harakari claims that submissions have been regularly made to the App Store and failed to make any further ground. It appears that the project is running into a problem of binary similarity, which can prevent an emulator from existing if other binaries appear to match other released products, due to the use of identical core files.
There is the prospect of setting up a TestFlight group, but the prospect of managing users seems "a bit too much." There is also the desire to avoid gating off access with donations or Patreon, which again makes TestFlight a hard route to follow.
In an update from September 7, it appeared that MAME4iOS was resubmitted under the name "ArcadeMania," which may be a temporary name. A developer confirmed on Reddit that it is still in review.
uoYabause
uoYabuse is a port of the Yaba Sanshiro Sega Saturn Emulator. It has historically been targeted at Android, but it also has iOS builds available.
A tweet by the Yaba Sanshiro emulator developer on April 6 mentions that the emulator was submitted to the App Store for review. On July 9, a tweet said it was in review.
By August 3, the developer confirmed that Yaba Sanshiro 2 was available in the App Store. It is priced at $4.99.
PPSSPP
As the name suggests, PPSSPP is an emulator specializing in Sony PlayStation Portable games. It is already available on PC and Android, with an "unofficial" installation guide available to get it working without App Store access.
A project blog post from April 6 discused Apple's emulator rule changes, but there was confusion over lines where links "must be provided to all downloadable software."
On May 15, PPSSPP arrived in the App Store. A free download, it requires iOS 12.0 or iPadOS 12.0, or an Apple Vision Pro.
Provenance
Another multi-emulator frontend, Provenance offers extensive support for a wide variety of game platforms. The list includes many from Nintendo, including the NES, Famicon Disk Sistem, Game Boy, SNES, Game Boy Color, Virtual Boy, Nintendo 64, Game Boy Advance, and Pokemon mini.
There is also support for Sega consoles including the Genesis, Mega-CD, and Saturn, the Sony PlayStation, Bandai WonderSwan, NEC TurboGraphix systems, and others from Atari, Bandai, and SNK.
Provenance EMU
The emulator is already available as a side-load but it is planning to launch onto the App Store soon. On April 19, the team confirmed that it was working on a release.
In a Patreon update on April 23, the team discussed the use of TestFlight for betas, but also that there was no "exact ETA" due to needing to stay within the App Store's rules for the review process. The team also planned to remove anything that could trigger a reaction from Nintendo, such as logos and system branding.
In a May 28 update, the team discussed the progression of converting C-based cores to Swift, as well as Metal and OpenGL view controllers. On X, it is explained that the coding for the App Store release is ongoing, but that it's intended to maintain the "same standard" as previously created commercial work, hence the legacy code rewrite.
"The release will be delayed longer than I originally hoped," they added.
On the official X account, the emulator was still in development and testing for iOS as of July 27. Updates on August 14 and 15 show that Mac Catalyst builds are working, along with a tvOS version.
RetroArch
A frontend for emulators and game engines, RetroArch handles emulation for a large number of platforms. Both what it can emulate and what it can run on.
For iOS and Apple TV, there are already downloads available to run games via sideloading, but not an App Store-compatible version yet.
Developer hizzlekizzle confirmed on Reddit on May 7 that the emulator has been submitted for App Store Review. However, they had yet to hear back from Apple about it passing at the time.
On May 15, Retroarch appeared on the App Store as a free emulator.
Retroman
Published by Konstantinos Papadakis, Retroman is an 8-bit game emulator for playing NES games. It is a free download from the App Store on iPhone and iPad, with a Pro tier available for $1.99.
Including full NES emulation mapper support, it includes support for gamepads, customizable video and audio settings, and iCloud game save synchronization.
SameBoy
SameBoy by Lior Halphon is an emulator for the Game Boy and Game Boy Color from Nintendo. It claims to be user-friendly and open source, and it's free in the App Store.
The emulator description says it uses the "world's most accurate Game Boy emulation core," with it having Rumble support, save states with gesture support, a wide range of scaling filters, and MFi hardware support. It even emulates a Game Boy Camera when required.
ScummVM
ScummVM from Eugene Sandulenko is a very niche emulator, in that it is intended to play classic point-and-click adventure games. For example, "Day of the Tentacle" or the "Monkey Island" series.
It is available on the App Store, for free.
MAME
One of the best-known names in emulation, MAME is not going to be available on iOS anytime soon.
In a confirmation on Reddit, it is said that the team has been getting rejections "due to spam after multiple submissions," and that appeals have not worked so far.
The best guess for the rejection is the "binary similarity" of arcade "drivers" used by the software. For example, if a game producer like Capcom submitted a game of theirs and used the MAME driver in their own iOS app, MAME's submission could be flagged for the same piece of software.
This hasn't deterred the team, who say "We're trying to figure out the best way forward."
UTM SE
UTM SE differs from many other emulators in that it is a retro PC emulator. While others that can emulate some PC games are game or engine-specific, UTM SE instead emulates the computer, and then the software is run on top of it.
There is the ability to run pre-built "machines" for Windows XP, Mac OS 9.2.1, FreeDos, Debian 11, and ArchLinux. The emulator also supports both VGA and terminal-based modes, and can emulate x86, PPC, and RISC-V architectures.
The emulator is notable because it was previously rejected by Apple over its banning of Just In Time (JIT) compilation rules. Turing Software, behind UTM SE, implemented the QEMU TCTI emulator to work around the JIT restrictions, with it landing in the App Store on July 14.
UTM SE is free to download from the App Store, requiring iOS 14 or later for iPhone or iPad, or an Apple Vision Pro.
VirtualFriend
Nintendo's Virtual Boy was an unusual headset-based game console, and one that is extremely rare to find due to being a commercial failure. However, there are communities of gamers who are enthused about the headset, which played games in red and black.
VirtualFriend is a free emulator for the iPhone, iPad, and the Apple Vision Pro. That last one is quite apt considering the Virtual Boy was a playable headset and the Apple Vision Pro lets you use it in full 3D.
Users can explore the entire library of Virtual Boy titles and homebrew games, complete with 3D title screens. While the original was a red and black color scheme, users can change to use different preset colors, or select their own.
Not all emulators
While the rule changes did open up the possibility of more emulators arriving in the App Store in the future, it doesn't allow every type to appear.
One of the problem areas is Apple's recent prohibition of Just In Time (JIT) compilation. This is the compilation of code while a program is running, rather than before the software is run in the first place.
Apple considers this a security issue, despite using it for Safari itself. Due to Apple's limitation, some emulators cannot be submitted to the App Store for review, since they will fail automatically.
For example, the DolphiniOS emulator for emulating Nintendo Wii and Nintendo Gamecube games requires JIT, due to having to translate PowerPC code to run on Apple's ARM-based chips.