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Multi-system emulator (NES, SNES, GB, GBA, PCE, SMS/GG) for Windows, Linux and macOS


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Mesen is a multi-system emulator (NES, SNES, Game Boy, Game Boy Advance, PC Engine, Master System/Game Gear) for Windows, Linux and macOS built in C++ and C#.

Development Builds


Native builds

These builds don't require .NET to be installed and offer improved start up times.

.NET builds

These builds require .NET 8 to be installed (except the Windows 7 build which requires .NET 6).
For Linux and macOS, SDL2 must also be installed.

Notes / limitations

macOS: The macOS build still has a number of limitations (e.g no gamepad support).

SteamOS: See




Mesen is available under the GPL V3 license. Full text here:

Copyright (C) 2014-2024 Sour

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see