Nintendo Entertainment System / Nintendo Game Boy / Nintendo Game Boy Advance / Nintendo Game Boy Color / Super Nintendo Entertainment System /

Mesen Discontinued

A multi-system emulator best known for its accurate NES core and deep debugging tools, also covering SNES, Game Boy, GBA, PC Engine, SMS/Game Gear and WonderSwan. Sour's repository is now an archive of version 2.1.1 (mid-2025); development continues as Mesen CE.

Screenshot of Mesen
260a294b298c (cropped to the Mesen window by Emulator World) · CC BY 4.0 · source

Facts

Runs on
Windows, macOS, Linux
License
Open source (GPL-3.0-or-later)
Accuracy
Cycle-exact
Online play
Netplay
Mobile
None (no official phone or tablet version)
Models
Famicom, NES, Famicom Disk System, Super Game Boy
Opens
.nes .unf .fds .nsf .sfc .smc .bs .spc .gb .gbc .gba
Written in
C++, C#
Authors
Sour
Used by
Mesen CE
Last checked
Oct 2026

Features

  • HasSave states
  • HasRewind
  • HasFast-forward
  • HasRun-ahead
  • HasOnline multiplayer
  • Not listed:CRT shaders
  • HasA/V recording
  • HasCheats
  • Not listed:Achievements
  • Not listed:Themes

Input

  • HasGamepad
  • Not listed:Touch controls
  • HasLight gun
  • HasMouse
  • Not listed:Positional key mapping
  • Not listed:Symbolic key mapping
  • Not listed:On-screen keyboard
  • Not listed:Native keyboard

For developers

  • HasDebugger
  • HasMemory viewer
  • HasDisassembler
  • HasProfiler
  • HasTrace logger
  • HasScripting
  • Not listed:Command line

Features not listed may still exist. Edit this entry if something is missing or wrong.