Mesen is a high-accuracy NES emulator for Windows and Linux. It offers numerous features, such as save states, video filters, netplay, rewinding, overclocking, cheat codes and HD packs. It also includes an extensive set of debugging tools for homebrew development or romhacking.
Publisher’s description
What is Mesen?
Mesen is an open-source emulator program for Windows from SourMesen. It ranks 48th by popularity among emulators in this catalogue. It is written in C++.
Installation and requirements
Official installers exist for 32-bit as Portable. It runs without installation (portable).
Popularity and file types
The source code on GitHub (SourMesen/Mesen) has 1,324 stars. On Windows it registers 4 file types, including .nes, .nez, .unf and .unif. Similar programs include PCSX2, BizHawk and SameBoy.
Project description on GitHub: “Mesen is a cross-platform (Windows & Linux) NES/Famicom emulator built in C++ and C#”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
- 32-bit only
- No update for more than a year
- Source repository archived
In short: Mesen is an open-source emulator tool for 32-bit PCs. Updates have slowed down.
Is Mesen safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
91BD2B1BA007C9349864A96E490DBDAADA78033D51E0BE1AABBF442A4B9A7CDA· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.9.9Latest | December 8, 2021 | — | 32-bit ZIP |
Install from the command line
Silent install ›winget install --id SourMesen.Mesen -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- SourMesen
- Category
- Emulators
- Licence
- GPL-3.0
- Price
- Free
- Source code
- github.com/SourMesen/Mesen
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- Portable
- Version
- 0.9.9
- Released
- December 8, 2021
- Added to the catalogue
- July 28, 2025
- Versions listed
- 1
- GitHub stars
- 1,324
- GitHub forks
- 330
- Website
- mesen.ca
- winget ID
- SourMesen.Mesen
File types it opens (4)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Mesen
See all ›-
Open source11.1K ↓ -
BizHawk2.11A core-based, multi-system emulator written in C#. Provides nice features for casual gamers such as full screen, and controller/joystick support in addition to full rerecording and debugging tools for all system cores.Open source4.3K ↓ -
SameBoy1.0.4SameBoy is an open source Game Boy (DMG) and Game Boy Color (CGB) emulator, written in portable C.Other licence712 ↓ -
Open source1.1K ↓ -
Proprietary20.6K ↓ -
Open source★ 10K - Open source64K ↓
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Open source50 ↓
Frequently asked questions
Is Mesen free?
Yes. Mesen is open-source software under the GPL-3.0 licence.
Is Mesen safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Mesen with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does Mesen run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.
Can I use Mesen without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to Mesen?
PCSX2, BizHawk, SameBoy, bsnes and Genymotion. The alternatives page compares them.
