Mesen 2 is a free emulator for Windows from developer SourMesen. A single program handles NES, SNES, Game Boy (Color), Game Boy Advance, PC Engine, SMS/Game Gear and WonderSwan (Color), so a mixed retro library needs no separate emulators. Version 2.1.1, dated July 6, 2025, is the current one in our catalog.
Who a single emulator for NES through GBA suits
Mesen 2 fits players who want several retro systems without keeping a separate emulator for each. It covers NES, SNES, Game Boy, Game Boy Color, Game Boy Advance, PC Engine, SMS/Game Gear and WonderSwan, including the Color model.
It also suits anyone who likes Game Boy Advance style games and wants one tool that reaches back to older handhelds and consoles.
What the 32.5 MB package covers in practice
The package is 32.5 MB and is built for Windows, with Linux and macOS versions of Mesen also available. That means the same emulator can follow you across desktop systems.
Costs and licence
Mesen 2 is free and uses the GPL-3.0 licence. There are no price tiers, ads or in-app purchases.
Anyone who wants details on settings should check the project page on GitHub.
Mesen 2 pros and cons
Pros
- Free
- Covers NES, SNES, Game Boy, GBA, PC Engine, SMS/Game Gear and WonderSwan
- Released under the GPL-3.0 licence
- Compact 32.5 MB download
- Distributed from the official github.com host
Cons
- Little feature detail beyond console support
- Features are limited to console support
- Only the Windows build is covered in this listing
Is Mesen 2 safe?
Mesen 2 comes from SourMesen and is licensed under GPL-3.0, which means its source code is public and can be read by anyone. The 32.5 MB file is the 2.1.1 build from July 2025, so scan it with your own antivirus before you run it.
How to install Mesen 2
- Press the download button to get the official file.
- Run the installer you saved and confirm the Windows security prompt if the publisher matches.
- Follow the setup steps, then start Mesen 2 from the Start menu.
