an NES emulator by Quietust
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Nintendulator is an open source Win32 NES emulator written in C++. The original goal was to emulate the NES down to its hardware quirks; though it's fallen behind over the years, recent builds have caught up once again and can emulate certain behaviors most other emulators neglect to handle. However, this emulation precision comes at a price - a 1500MHz (estimated) or faster CPU is required to emulate at full speed.

Supported file formats include .NES, UNIF, FDS (fwNES format), and NSF. Mappers are handled using external DLLs, complete with extra sound channels for most games which provide them. Other notable features include writing to FDS images (by storing the differences in separate files), Game Genie support (limited to 3 codes), customizeable controllers (including 4 player), input movie recording and playback (with re-recording), AVI capturing, and a debugger with moderate breakpoint support. Additionally, savestates and battery-backed RAM are saved within the current user's Application Data folder rather than in the application's own directory, allowing Nintendulator to function properly when not run as an administrator.

To contact the author, send email to quietust at either or - you may also send Skype messages to "Quietust" but only after you first send an email, as messages are only accepted from existing contacts.


All - Recent - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 - 2006 - 2005 - 2004

June 21, 2017

The debugger now has its own dedicated I/O handlers for safely reading CPU and PPU memory without triggering side effects. Debugging NSFs should now be far easier.

June 14, 2017

Several issues in MMC5 sound emulation have been fixed, notably correcting a hang in at least one Koei title.

Some minor tweaks have also been made to the various Konami VRC mappers.

May 27, 2017

Performing a reset or savestate save/load while emulation is active will no longer interrupt audio playback or controller input.

September 21, 2016

The Arkanoid Paddle and SNES Mouse controllers can now be configured to use custom axes instead of always using the mouse - most notably, it's possible to play Arkanoid II in VS mode using two paddle controllers bound to different axes.

June 1, 2016

A few adjustments have been made to CPU DMA emulation (for sprite transfers and sound sample fetches), as well as a small tweak to Controller configuration to get it to work in Wine.


Here you may download various versions of Nintendulator and other related applications.

Latest unstable build

This is a snapshot of my latest development code. Though this has features not present in the current release below, it may also have significant bugs, so download it at your own risk!
This is NOT a release!

Notable changes include added NES 2.0 support, various emulation fixes, and numerous added or improved mappers.

Current release

This is the latest officially released version of Nintendulator. You are highly recommended to use this version instead of the latest build above unless you require any of the new functionality added since the last release.

On June 22, 2010, the Winamp plugin was rereleased after it was discovered to have been completely broken. The ANSI release of the emulator itself has also been found to not run on Windows 98 and earlier; if, for some reason, Windows 98 compatibility is needed, please use a newer version.

Outdated releases

These are old releases of Nintendulator, archived here for posterity. Where present, mapper DLL binaries are also included with the corresponding emulator releases.

Mappers Supported

These mappers are supported in the latest released version of Nintendulator. Mappers listed in bold have been added or improved in the latest beta build; for iNES and VS, strike indicates what the compatibility was in the official release, while for UNIF it indicates boards that have been removed.

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