The best retro game apps for iPhone Duo and iPhone in 2026

For most people, Delta is the best retro game app for iPhone and iPhone Duo. It’s free, it plays the 8-bit and 16-bit home consoles and classic handhelds that a lot of people grew up with, and version 2.0, released on 22 October 2026, added controller layouts for every iPhone Duo pose.¹ Among the other retro game apps for iPhone Duo, RetroArch covers the most systems, Gamma specialises in one mid-1990s disc-based console, and Antstream streams licensed games, so you need no game files.

9io, which publishes this blog, makes Bitfold, a retro console app for iPhone Duo that’s on its way to the App Store. It has its own section after the apps you can download today, and we haven’t ranked it against them. iPhone Duo, Apple’s first foldable, went on sale on 23 October 2026, so fold support is days old where it exists.² Our guide to the best iPhone Duo apps covers apps beyond games.

This post covers Apple’s rules, what’s legal to play, each app in turn and how to play in each of the Duo’s postures, and it ends with a rule for choosing.

Retro game apps for iPhone Duo and iPhone compared

Prices are US App Store prices as of 26 October 2026. “Not stated” means the App Store page and release notes don’t mention iPhone Duo. Such apps still run, and Apple says an app built with the iOS 26 SDK or earlier appears at its usual iPhone size in the middle of the open display.³

Why emulators are allowed on the App Store

On 5 April 2024, Apple changed guideline 4.7 of its App Review Guidelines to add games from retro game console emulator apps to the software apps may offer.⁴ On 1 August 2024 it clarified that PC emulator apps can offer to download games too.⁵ The guideline now says retro game console and PC emulator apps “can offer to download games”.⁶

The guideline also makes the developer responsible for all the software its app offers, including making sure that software follows Apple’s guidelines and the law. An app that offers games this way must list them in an index with links, and must let people identify anything above the app’s age rating and restrict it by age.⁶

The emulators below leave the games to you. Manic EMU’s App Store page, for example, says it includes no games, firmware or game data, and tells you to stick to backups you legally own, homebrew and public-domain games.⁷ Delta 2.0 adds experimental support for third-party cartridge readers, so you can play a cartridge you own straight from the cartridge.¹

Which retro games you can legally play

An emulator is software that behaves like old hardware. After talking to three intellectual property lawyers, Tom’s Hardware concluded that emulators in themselves mostly don’t infringe copyright, depending on their purpose.⁸ What matters is where each game file came from, and four kinds of source are safe.

• Games made for the app. Vector Racer, RetroRapid! and Bitfold’s ten Bitfold Originals come from their own developers.
• Homebrew and freeware. New games written for old systems, and old games their owners now give away. Gamma has a Free Games section of homebrew, and ScummVM’s website offers eleven freeware adventure games.⁹¹⁰
• Licensed services. Antstream streams more than 1,300 games it has licensed.¹¹
• Backups of games you own. In the US, the Copyright Office says section 117 of the Copyright Act lets the owner of a computer program make an archival copy. It must be only a backup, and you must destroy it, or hand it over with the original, if you part with the original.¹² Other countries have their own rules.

Downloading commercial game files from ROM sites is another matter. The lawyers told Tom’s Hardware that downloading them is likely illegal even if you own the game on a cartridge or disc.⁸ This section is general information and isn’t legal advice.

Delta, RetroArch and the other retro emulators for iPhone

Apart from Delta, none of these emulators’ App Store pages mentions iPhone Duo as of 26 October 2026.

Delta (Testut Tech) plays 8-bit and 16-bit home consoles, a mid-1990s 3D console and classic handhelds, including a dual-screen one. It’s free, with optional patron tiers from $5 to $30, and supports game controllers and keyboards. Version 2.0 adds controller skins optimised for every iPhone Duo pose, upright or sideways, and Split View beside another app. Closing the phone puts dual-screen games to sleep, as shutting the original’s lid did.¹ From simulator screenshots, FoldHunt reports Delta’s library in three columns on the cover, four open flat, two short rows standing as a tent and three half-folded like a laptop.¹³

RetroArch (Libretro) covers the most ground. Its App Store page lists 69 systems and game engines, each run by a plug-in called a core. It’s free, open source and ad-free, and its privacy label says it collects no data. It supports game controllers, shaders, rewind, netplay and RetroAchievements, and runs at 120 Hz on ProMotion displays. Its latest version, 1.22.2, is from 18 November 2025.¹⁴

Manic EMU (Shenzhen Aoshuang Future Technology) puts more than 40 systems in one library, including consoles and handhelds up to the early 2010s, arcade boards, old home computers and old mobile-phone games. It’s free, and Premium, at $0.99 a month, $4.99 a year or $9.99 once, adds faster fast-forward, more save states and extra controller players. Controllers and keyboards work, and some systems support online play. Version 2.0.1 is from 18 September 2026.⁷

Provenance (Joseph Mattiello) is free and open source, and covers dozens of consoles, handhelds and arcade systems up to the early 2010s. An optional Provenance Plus subscription adds iCloud sync, with in-app purchases listed at $3.99, $39.99 and $99.99. It supports game controllers and can use controller skins made for Delta and Manic EMU. Version 3.3.0 is from 29 January 2026.¹⁵

Gamma (ZodTTD LLC) specialises in one mid-1990s disc-based home console. It’s free with ads, and $4.99 removes them. It renders 3D games at up to eight times their original resolution, and has a CRT shader, RetroAchievements and support for controllers and keyboards. Version 2.0.2 is from 4 September 2026.⁹

Folium (Jarrod Norwell) is the paid option, at $2.99 plus $1.99 for extra features. It plays classic handhelds, including two dual-screen models, 8-bit and 16-bit home consoles and a mid-1990s disc-based console, and supports game controllers. Some systems need firmware files from the original hardware, which Folium asks you to import. Version 2.2 is from 4 October 2026.¹⁶

Licensed, freeware and original retro games

Antstream Arcade (Antstream Ltd) streams more than 1,300 licensed games from arcades, home computers and consoles, so there are no files or emulator settings to manage. The app is free and the subscription costs $4.99 a month or $19.99 a year, with a seven-day free trial on the annual plan. It supports wired and Bluetooth controllers and needs a steady internet connection. Games can leave the catalogue.¹¹

ScummVM (the ScummVM team, published by Eugene Sandulenko) plays classic point-and-click adventure games and role-playing games from old home computers. It’s free and open source, supports game controllers and comes with two playable demos. Its website offers eleven freeware games, including Beneath a Steel Sky and Flight of the Amazon Queen.¹⁷¹⁰ Version 2026.4.0 is from 14 October 2026.

Vector Racer (Stefan Sturm) is an original arcade racer in the style of 1992, drawn in flat-shaded polygons, with four cars and six circuits. It’s free to download, and $5.99 buys the full game. Its page lists only touch controls, and says the game needs no account and shows no advertising. Version 1.2 added iPhone Duo layouts for the inner display, upright or sideways.¹⁸ FoldHunt, working from the developer’s screenshot, describes the race on the top half, with steering, brake and throttle on the bottom half.¹⁹

RetroRapid! (Daniel Devesa Derksen-Staats) is an original three-lane arcade racer with two retro styles, LCD and Pocket. You can play free every day, and $2.99 once buys unlimited plays. It works with touch, keyboards and game controllers, supports VoiceOver, and lets two players race over SharePlay for free. Version 2.0 (16 October 2026) is built for iPhone Duo. In a tabletop pose the road sits above the hinge and the controls below, and moving the hinge pauses the race.²⁰²¹

Our roundup of iPhone Duo games has more games that use the fold, retro or otherwise.

Bitfold, the retro console app we make

Bitfold is our own app, so weigh this section with that in mind. It’s a retro game console app for iPhone and iPad with iOS 17 or later, made for iPhone Duo and on its way to the App Store.

It differs from the apps above in its games and its fold layouts. It comes with ten original games we wrote for it as real cartridge images, including Sprout’s Quest, a platformer, and Prism Drop, a falling-gem puzzle. Closed, iPhone Duo shows a pocket console on the outer display. Folded like a laptop, Bitfold becomes a clamshell, with the game on the top half, controls and a companion screen below, and the console’s hinge drawn over the real fold. Folded like a book, it opens into two pages so nothing sits on the crease. The game keeps running through every change.

It also plays backups of 8-bit handheld cartridges you own, imported from Files, AirDrop or iCloud Drive, and works with Bluetooth controllers and hardware keyboards. Like RetroArch and Vector Racer, it has no ads. It also has no accounts or tracking, and it never connects to the internet.

Sprout’s Quest, Prism Drop and Noodle play free in a browser at bitfold.9io.ai/play for five minutes a day, with no sign-up. Our launch post explains how we built Bitfold, and our games live on 9io.ai/games.

How to play retro games on iPhone Duo

1. Install an app from the table. For most people that’s Delta.
2. Get games you’re allowed to play, such as originals, homebrew, freeware or backups of your own cartridges and discs.
3. Save the files to the Files app or iCloud Drive, then import them in the app.
4. Pick a posture, and pair a controller if you’ll play with the phone open flat.

Each way of holding iPhone Duo suits a different kind of play.

• Closed. The 5.4-inch outer display plays like a small iPhone, for a quick game in one hand.²
• Folded like a laptop. This is the handheld shape, with the game on the upper half and the controls on the lower half, clear of the crease. Delta, Vector Racer, RetroRapid! and Bitfold all use it.
• Open flat. The 7.6-inch inner display gives the biggest picture.² At about 1.42 to 1, close to a sheet of A4, it shows a 4:3 picture from a TV-era console at full height across about 94% of its width (1.33 ÷ 1.42).²² On-screen buttons would cover the picture, so use a controller.
• Folded like a book. The display becomes two pages. Bitfold splits its console across them to keep buttons off the crease.
• Split View. Delta 2.0 runs beside another app, so a guide or a map can sit next to the game.¹

Fold Retro, an emulator MakiByte released on 19 October 2026, says it was designed for foldable phones, with the game above the hinge and the controls and touch screen below it when half-folded. Its free tier covers some classic handhelds, and its Plus tier adds five systems, mostly home consoles, and removes the video ads that play when you close a game. Its App Store page listed no Plus prices on 26 October 2026, and at a week old we’ve left it out of the table.²³

Every app in the table except Vector Racer works with game controllers. To pair one, put it in pairing mode and choose it in Bluetooth settings. For some controllers, Settings > General > Game Controller lets you change the default buttons.²⁴ Delta, Manic EMU, Gamma, RetroRapid! and Bitfold also take a hardware keyboard.

For sharp pixels, use integer scaling where an app offers it, as Bitfold does. For TV-era consoles, try a CRT-style effect. Gamma has a CRT shader, RetroArch supports shaders, Delta 2.0 has experimental filters such as CRT and Manic EMU has its own retro filters.⁹¹⁴¹⁷ For handheld games, Bitfold adds a pixel grid, dot-matrix shadows and LCD blur.

How we picked and checked

We included apps on the US App Store that play retro games, and left out apps whose names include a console maker’s trademark and the many recent emulators with little history on the store. Prices, controller support and versions come from each App Store page on 26 October 2026. Fold layouts come from release notes and from FoldHunt’s iPhone Duo directory, which labels how sure it is of each claim. We haven’t tested any of these apps on an iPhone Duo, or measured performance or battery life. Bitfold’s details come from our own build.

Which retro game app to choose

• If you want one free app for the classic consoles and handhelds you grew up with, use Delta. On iPhone Duo it already has layouts for every pose.
• If you want the most systems in one app and don’t mind configuring it, use RetroArch.
• If you want an all-in-one library with online play, use Manic EMU, and pay for Premium only if you need its extras.
• If you prefer open-source software and want iCloud sync, use Provenance with Provenance Plus.
• If your games are discs for the mid-1990s disc-based console, use Gamma.
• If you’d rather pay once for an app focused on handhelds, use Folium.
• If you own no old games, start with Antstream for licensed classics, ScummVM for freeware adventures, or an original game such as Vector Racer, RetroRapid! or Bitfold, whose browser player you can try today.

Frequently asked questions