# Indigo: Retro Game Emulator — Play your classic game files

> Accurate retro game emulator for Game Boy, GBC, and GBA on iOS. (iPhone/iPad app by John Haas.)

- Source: https://appshunter.io/ios/app/indigo-retro-game-emulator/id6799823603 (this page in markdown: same URL + `.md`)
- Developer: [John Haas](https://appshunter.io/developer/356064826)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English
- Released: 2026-09-23
- Data updated: 2026-10-24
- Monetization: free with in-app purchases

## What is Indigo?

Indigo plays Game Boy, Game Boy Color, and Game Boy Advance game files on your iPhone and iPad.

You bring the files. Indigo brings a carefully built emulator—and a game of its own, so there's something to play the moment you open it.

ACCURATE, NOT APPROXIMATE

Indigo is built for correctness first. Its timing is validated against standard hardware test suites and, where those tests run out, against measurements from a real Game Boy Advance—including cycle-level contention between the processor and display.

The result is an emulator designed to reproduce the behavior of the original hardware, including the quirks that some games depend on.

SAVE ANYWHERE, UNDO ANYTHING

• A save-state slot with its own screenshot, free—five more slots with Pro
• Autosave, so the app reopens exactly where you left off
• Rewind the last 30 seconds to undo a bad jump or a missed move (Pro)
• Fast-forward at 2×; Pro raises it to 4× and adds hold-to-run
• Multiple named battery saves per cartridge, each with its own states—so two people can play the same game without sharing a save

A save state you have already made always loads, with or without Pro.

PLAY TOGETHER

• Link cable multiplayer over your local network, with automatic discovery
• Online multiplayer with a room code, so a friend anywhere can join
• Phones can link with the browser version too

All of it is included. There is no multiplayer subscription.

MADE FOR THE HARDWARE YOU ACTUALLY HAVE

• Physical controllers and keyboards, with touch controls stepping aside automatically when one connects
• Multitouch on-screen controls you can slide between without lifting a thumb
• Screen filters: sharp, smooth, or an LCD grid inspired by the original display
• Screenshots saved straight to Photos, at native size or up to 6× with Pro
• Siri and Spotlight shortcuts, plus Home Screen quick actions, to jump into a game by name

A LIBRARY THAT SORTS ITSELF

Indigo reads the cartridge header instead of relying on the filename. Even a file named with a hash can appear under its real title with the correct cover art.

Search your library, or let Indigo keep your most recently played games close at hand.

THE DETAILS

• Force Game Boy Color games to run as original Game Boy hardware, or the reverse, on a per-game basis
• Per-game clock offsets for cartridges with a real-time clock
• Cheat codes in GameShark, Action Replay, CodeBreaker and Game Genie formats (Pro)
• Cartridge sensors—tilt, gyro, rumble and solar—for the carts that shipped with them (Pro)
• The Game Boy Printer, with pages saved to Files (Pro)
• Optional BIOS support if you have your own dump; a BIOS is not required

INDIGO PRO

The free app is a complete console. Every game runs at full speed, battery saves are never touched, and nothing about playing is held back.

Pro is one purchase—no subscription—for the enthusiast extras:

• Cheats: GameShark, Action Replay, CodeBreaker, Game Genie
• Rewind, up to 30 seconds back
• Six save-state slots per game instead of one
• Fast-forward to 4×, and hold-to-run
• Cartridge hardware: tilt, gyro, rumble, solar sensor
• Game Boy Printer, with pages saved to Files
• Screenshots up to 6× native size

It unlocks on every device you sign in to, and it is shared with your family.

Indigo collects nothing about you and sends nothing anywhere, apart from looking up cover art for games you've added and, when you use it, pairing two players for link-cable multiplayer.

BRING YOUR OWN GAMES

Indigo does not include, sell, link to, or help you find game files. Add your own through the Files app, AirDrop, or iTunes File Sharing.

The one game included is Indigo Demo, a small brick-breaker made for Indigo.

Indigo is not affiliated with, endorsed by, or sponsored by Nintendo. Game Boy, Game Boy Color, and Game Boy Advance are trademarks of Nintendo, used here only to describe which game files Indigo can open.

## Key features

- Plays Game Boy, GBC, and GBA files
- Accurate hardware emulation
- Save anywhere and autosave
- Link cable and online multiplayer
- Physical controller support
- Customizable screen filters
- Automatic library sorting

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Indigo Pro | $4.99 | one-time |


## Is Indigo safe?

Not enough ratings yet to assess Indigo.

## Is Indigo legit?

Indigo: Retro Game Emulator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Indigo is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Indigo

### Does Indigo have ads?

No, Indigo is ad-free. The free version provides a complete emulation experience without advertisements.

### What Game Boy systems does Indigo support?

Indigo supports Game Boy, Game Boy Color, and Game Boy Advance game files. You can even force GBC games to run as original Game Boy hardware or vice versa.

### How does Indigo handle saving games?

Indigo offers autosave so the app reopens exactly where you left off. The free version includes one save-state slot with a screenshot, while Pro offers five additional slots.

### Can I play multiplayer with Indigo?

Yes, Indigo supports link cable multiplayer over your local network and online multiplayer with a room code. Phones can also link with the browser version.

### Is Indigo available on Android?

Based on the provided data, Indigo is available on iPhone and iPad. There is no mention of Android support.

### What are the Pro features in Indigo?

Indigo Pro offers enthusiast extras like cheats, rewind functionality for up to 30 seconds, six save-state slots per game, and enhanced fast-forward options.

### How accurate is Indigo's emulation?

Indigo is built for correctness first, with timing validated against standard hardware test suites and real Game Boy Advance measurements, including cycle-level accuracy.

### What is the age rating for Indigo?

Indigo has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 1 release)

### 1.0.0 — 2026-09-23

No release notes.

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## More apps by John Haas

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All apps by John Haas: https://appshunter.io/developer/356064826

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*