Gameplay screenshot from the Sega Saturn version of Gex

Gex on Sega Saturn, used to illustrate the system Mednafen emulates. Screenshot via retroplace; this is a game image, not a Mednafen capture.

Mednafen

SEGA SATURN EMULATOR

Mednafen

Mednafen is a multi-system, open-source, command-line-focused emulator project that includes a Sega Saturn module. It is developed and distributed from the mednafen.github.io site and its source mirrors, with official documentation and a releases page maintained by the project.

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Gex on Sega Saturn, used to illustrate the system Mednafen emulates. Screenshot via retroplace; this is a game image, not a Mednafen capture.

Sega SaturnPRIMARY SYSTEM

2000sPROJECT BEGAN

Open sourcePROJECT MODEL

WHY IT MATTERS

Why Mednafen for Sega Saturn?

Mednafen emphasizes accuracy and cross-platform CLI-driven emulation. Its Saturn module is intended for users who prioritize correctness over convenience and who are comfortable with command-line configuration or using a frontend. The official documentation focuses on options and known limitations for Saturn emulation.

BEST FOR

Best uses

Accurate single-system testing, preservation-minded playback, and integration as a backend for frontends that want Mednafen's Saturn core. Suitable for developers, maintainers, and advanced users who need detailed configuration and logging.

Gameplay from NiGHTS into Dreams… on Sega Saturn.

The people behind Mednafen

History & status

Mednafen is a long-running multi-system emulator project hosted at mednafen.github.io and mirrored on GitHub. Over time the project has added and refined modules for many systems, including an evolving Sega Saturn implementation. The Saturn module has been developed within the Mednafen codebase and receives updates as part of Mednafen releases; the project publishes stable and UNSTABLE release information on its releases page and maintains a documentation section specifically for Saturn. The project is actively maintained via the official site and source mirrors.

What Mednafen supports

Sega Saturn emulation module (documented on the Mednafen site)
Official builds and source for Windows, Linux, and macOS (packaging available via distribution channels such as Homebrew)
Command-line front-end with many per-system and global options
Netplay and recording features at the Mednafen application level

Download and availability

OFFICIAL DOWNLOADS

Get Mednafen

Official Mednafen downloads and release notes are published on the project's releases page. Prebuilt Windows zip packages have been distributed from the project's releases; Linux/macOS users can build from source or use distribution packages where available (for example Homebrew formulae point to the official project). Always download releases from the project's official site or verified mirrors.

Get Mednafen ↗

DOCUMENTATION

Official documentation

Read the official configuration, compatibility, and troubleshooting material before changing advanced options.

Read official documentation ↗

Broken or missing download? Emulator projects move and official links sometimes change. Please contact Retro Replay so the source can be verified and updated.

Mednafen setup guide

Setup note: This guide shows how to prepare Mednafen's Sega Saturn module on a modern PC using the official documentation and releases. It focuses on verifying the project, obtaining Mednafen, placing required firmware, and launching Saturn content with Mednafen. Read the project's Saturn documentation page for module-specific options and known issues before use.

1) Verify official project and obtain a release or source: Use the official Mednafen website (mednafen.github.io) Releases page to pick a release or UNSTABLE build appropriate to your needs. For Windows you will typically download a prebuilt ZIP if provided; for Linux and macOS you can either use a distribution package (for example Homebrew formula references the official project) or build from source from the project's Git repository/mirrors. Prefer the official releases page for checksums and release notes.
2) Install or unpack Mednafen: Windows: unpack the released mednafen-*-win64.zip (or win32) to a folder. Linux/macOS: install via your distribution package manager if it packages Mednafen, or build from source following the project's build notes. Building from source will require development libraries listed on the releases or documentation pages.
3) Read Saturn documentation and prepare firmware: Open the project's Saturn documentation page for details about the module's options and any required firmware. The Saturn module generally requires region-specific firmware/BIOS files to boot commercial content; the documentation lists expected firmware placement and behavior. Do not use or expect firmware or commercial game files to be provided by Mednafen; obtain any firmware only from sources you legally own and follow local laws.
4) Place firmware in Mednafen's firmware directory: Create or locate Mednafen's base directory (the same folder as the mednafen binary or the user configuration directory used by your build/distribution). Place required Saturn firmware files in the firmware/ subfolder or the location documented for Saturn. The exact filenames and placement are documented on the Saturn documentation page; follow those instructions precisely.
5) Prepare Saturn images and optional CHD conversion: Use a verified disc image format supported by Mednafen (follow the documentation for supported image types). If you prefer lossless preservation of multi-track/pressed discs, consult the documentation or the project's releases notes for any conversion guidance (the project documents relevant image support in its Saturn module notes).
6) Launching and configuring Mednafen for Saturn: Run Mednafen from a terminal with the disc image as an argument (example form: mednafen <image>). Use the per-module settings described in the Saturn documentation to tune performance, audio/video, and input. Mednafen supports configuration files (mednafen.cfg and per-module overrides) — review those sections to persist settings. If you prefer a GUI, use a community frontend compatible with Mednafen (frontends are third-party projects).
7) Troubleshooting and known limitations: Consult the Saturn documentation and the project's release notes for known issues and module-specific limitations. Saturn emulation is complex: expect some games to require specific settings or to have imperfect compatibility. Use logging and verbose output from Mednafen when debugging; the documentation covers netplay, save states, and logging features.
8) Updates and building from source: To get the latest fixes for the Saturn module you may follow UNSTABLE builds or build from the project's repository/mirrors. Check the Releases page for any notes about upgrading between major Mednafen versions and for build dependency lists.

Software reminder: Do not expect Mednafen to include commercial games, BIOS/firmware, or keys. Obtain any console firmware or game images only from media you legally own and follow the project's documentation for filenames and placement.

Sources and further reading

Detailed guides and tutorials

Explore step-by-step guides for Mednafen as they are published.

Use Mednafen on Android

Android ARM64 builds exist for several Mednafen-derived Libretro cores, including Neo Geo Pocket, WonderSwan, Saturn, PC Engine, and PlayStation. Install the matching core through RetroArch for Android; the original desktop Mednafen application is a separate download.

Emulates: Sega Saturn, PlayStation, Neo Geo Pocket, TurboGrafx-16, WonderSwan.

Verified Android core build ↗ · Browse all Android emulators →