Mesen is a multi-system emulator (NES, SNES, Game Boy, Game Boy Advance, PC Engine, SMS/Game Gear, WonderSwan), and MesenYY is a fork, improve casual play experience, update it with interest.
Highlight improvement:
- Less input lag.
- Louder master volume.
- Separate battery save folder.
- Bigger window size, suitable for 4K.
Due to mystery reason that broke Linux and Mac version's compilation, this fork is Windows only at this moment.
See COMPILING.md
Mesen is available under the GPL V3 license. Full text here: http://www.gnu.org/licenses/gpl-3.0.en.html
Copyright (C) 2014-2025 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 http://www.gnu.org/licenses/.