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Mesen 0.6.0


Mesen is a NES/Famicom emulator and NSF player. It is still a work in progress - some features are currently incomplete or may change in future versions.




  • Other Features: 7z/zip archive support, numerous video filters (xBRZ, Scale2x, NTSC, etc.), sound recorder, sound effects, etc.
  • Stand-alone - Put the Mesen application into any folder and run it from there
  • Automatic updates - Mesen is able to check for updates and automatically install new versions of itself.
  • Built-in Debugger
  • Net Play - Play online with friends
  • Supports: Save States, Movie/Audio Recording, Screenshots, Cheat Codes
  • Support for over 195 mappers
  • NES and Famicom (including Famicom Disk System) support. Also supports: NSF, NSFe, VS System
  • High Accuracy - A lot of effort has gone into making Mesen as accurate as possible


Technical Details


  • Core built in C++ with a C# user interface.
  • Multi-threaded - Emulation, Video Filters, Rendering, Net Play and UI all run in their own threads.
  • Runs in 32-bits or 64-bits mode depending on the operating system, with the same executable file


The name "Mesen" is both a Japanese word (目線 - meaning "point of view" or "a person's gaze") and a terrible pun on the term "NES Emulator": "NES Emulator" → "NES Em" → "Mesen" (backwards)


0.6.0 - December 10, 2016

This release is a beta - save states, movies, etc. created with this version may not be compatible with future versions of Mesen.


New Features:

  • Debugger: Tons of new features and improvements (including labels and comments, a profiler, more options in the PPU viewer, etc.)
  • Audio: Greatly reduced sound latency.
  • Audio: Added an option to reduce the popping sounds produced by the DMC channel in some games.
  • Audio: Added channel panning options.
  • Audio: Added a crossfeed option.
  • Video: Added 2 new palette presets (Nostalgia and Nes Classic, by FirebrandX).
  • UI: Added a "power cycle" option to reload the current game.
  • UI: Added an option to load a random game.

Bug Fixes:

  • Video: Fixed a bug with the "Remove Sprite Limit" option that could cause it to display incorrect sprites on the screen.
  • Video: Fixed a bug with the aspect ratio option when overscan was used at the same time.
  • NSF: Fixed a crash that could occur when loading incorrect NSF files.






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