Gameplay from The Legend of Zelda on NES. Image from the Retro Replay media library.

multiEmu

NES EMULATOR

multiEmu

multiEmu is an open-source, from-scratch C++ emulator project that implements NES and CHIP-8, with Game Boy marked WIP. The repository contains source, CMake build files and instructions for Windows, Linux and macOS but no packaged binary releases.

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Gameplay from The Legend of Zelda on NES. Image from the Retro Replay media library.

NESPRIMARY SYSTEM

History documentedPROJECT BEGAN

Open sourcePROJECT MODEL

WHY IT MATTERS

Why this project matters

multiEmu is a small, educational multi-system emulator that combines NES, Game Boy (WIP) and CHIP-8 cores in a single C++ codebase. It is useful for developers learning emulator architecture or for users who want a lightweight, source-built emulator rather than a polished consumer frontend.

BEST FOR

Best use-case

Building from source for experimentation, debugging, or learning how NES/GB/Chip-8 emulation components are implemented. Not intended as a drop-in, feature-complete frontend for general gameplay compared with mature emulators.

Gameplay from The Legend of Zelda on NES.

The people behind multiEmu

History & status

The project repository on GitHub shows active source history in the main branch and lists NES and CHIP-8 as currently supported with Game Boy work in progress. The repo contains CMake build configuration, submodules, and platform-specific notes for Windows, Linux and macOS. There are no official binary releases in the GitHub Releases section; distribution is source-only via the repository.

What multiEmu supports

Nintendo Entertainment System (NES)
Game Boy (WIP)
CHIP-8
Desktop platforms (build from source): Windows, Linux, macOS

Download and availability

OFFICIAL DOWNLOADS

Get multiEmu

No packaged releases are provided in the repository's Releases page. Obtain the source from the official GitHub repository and build locally. The README shows clone and build instructions and notes the use of submodules.

Get multiEmu ↗

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.

multiEmu setup guide

Setup note: This project is distributed as source on GitHub. The recommended install path is to clone the repository (including submodules), install the platform dependencies listed below, and build with CMake. The repository does not ship commercial game ROMs or any system BIOS/firmware.

1) Clone the repository (with submodules): Clone the official repository and initialize submodules. Example: git clone –recursive https://github.com/Redcrafter/multiEmu.git. If you already cloned without –recursive, run git submodule update –init from the repository root.
2) Install build tools: Install a C++ toolchain, CMake, and a supported compiler for your platform. On Linux: install build-essential (or equivalent) and CMake. On Windows: use Visual Studio with CMake support or install MSYS2/MinGW and CMake. On macOS: install Xcode command-line tools and CMake.
3) Install runtime/library dependencies (Linux examples): The README calls out audio and display libraries for Linux. Examples: sudo apt install libasound2-dev (ALSA) or libpulse-dev (PulseAudio) for sound, and sudo apt install libgtk2.0-dev for display support. Other platforms may require equivalent libraries or linking flags.
4) Create a build directory and run CMake: From the repository root: mkdir build && cd build && cmake ../. Adjust generator (e.g., -G "Visual Studio 17 2022") if necessary. Resolve any missing dependency errors reported by CMake by installing the appropriate -dev packages or SDKs.
5) Build the project: Run make (or the appropriate build command for your generator) from the build directory: make (or open the generated project/solution in your IDE). Address any compiler warnings or missing include/linker errors by installing dependencies or adjusting CMake settings.
6) Prepare ROMs and test files: The repository does not include commercial games, BIOS or firmware. Use legally obtained ROMs for testing. For CHIP-8, small public-domain test ROMs are commonly used. For NES/GB, use ROMs you legally own. The README does not document an internal UI for loading ROMs beyond standard file-open behaviour; consult the built executable's command-line or UI for usage.
7) Run and debug: Launch the built executable from your build directory. Use your platform debugger or add logging to inspect core behavior. The project is aimed at learning and experimentation; expect features and compatibility to be limited compared with mature emulators.
8) Platform-specific notes: macOS: the README notes the file-open dialog may be nonfunctional. Linux: choose and install an audio backend (ALSA or Pulse). Windows: standard CMake + Visual Studio workflow should work, but verify submodule initialization before configuring.

Software reminder: The repository contains source code only. It does not include commercial ROMs, proprietary BIOS/firmware, or prebuilt binaries. Ensure you use only legally obtained ROMs and any required firmware.