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NES modding wiki

Explore NES modding, repairs, homebrew, hardware upgrades, and technical references. Find a guide for your console and follow the steps.

Family Computer logo.svg NES logo.svg

Famicom.png NES.png

DiskSystem.png TurboTwinFamicom.png AVFamicom.png NES Toploader.png

The Family Computer (Famicom) and Nintendo Entertainment System (NES) are 8-bit home consoles from the third generation of video game consoles.

The Family Computer released in Japan on July 15, 1983. The console would later be redesigned and rebranded as the Nintendo Entertainment System and released in North America on October 18, 1985 and in Europe on September 1, 1986. A floppy drive add-on — the Family Computer Disk System (FDS) — was released on February 21, 1986 in Japan.

The NESdev Wiki is a great supplemental development-focused resource to this wiki.

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29 tutorials
NESNES:"Stereo" Audio ModWhile the console as designed offers mono sound, it is possible to bypass the mixer and get true 2-channel sound (although not properl…Updated Oct 9, 2026NESNES:72 Pin Connector RefurbishmentSome sources online encourage the use of Brasso, sandpaper, or magic eraser on metal pins. This can potentially remove a layer of the …Updated Oct 9, 2026NESNES:Blinking Light WinThe Blinking Light Win (BLW) is an aftermarket 72-pin cartridge connector produced by Arcade Works and introduced in late 2014 as the …Updated Oct 9, 2026NESNES:Connector PinoutsA/V Connector Pinout Note: This connector is only available on the AV Famicom and a small handful of NES top loaders. It only carries …Updated Oct 9, 2026NESNES:Creating Game and Save BackupsMultiple options exist to create backups of your game ROMs and save data for the NES. Depending on what options and systems you need, …Updated Oct 9, 2026NESNES:Disabling CIC ChipIn order to prevent a glut of unlicensed games flooding the game market as with previous consoles, Nintendo implemented a lockout syst…Updated Oct 9, 2026NESNES:Expansion (EXP) Audio ModThe Famicom 60-pin cartridge connector has two pins for audio. Pin 45 supplies audio from the console to the cartridge, and pin 46 pin…Updated Oct 9, 2026NESNES:Famicom Disk System Belt ReplacementAfter time, the belts in the Famicom Disk System or Twin Famicom can wear out or break. Replacement Belts https://console5.com/store/f…Updated Oct 9, 2026NESNES:Famicom Disk System Glitching Sprites FixCertain combinations of Famicom and Famicom Disk System (FDS) RAM adapter units have an issue which causes sprites to appear glitchy d…Updated Oct 9, 2026NESNES:General TroubleshootingIf your NES is having issues, check the below general troubleshooting information for help. Blinking Power Light The most common issue…Updated Oct 9, 2026NESNES:Height DefnesThe Height Defnes is a mod designed by Greg Collins that adds a custom 3D printed center to the NES Toploader in order to accommodate …Updated Oct 9, 2026NESNES:Hi-Def NESThe Hi-Def NES was an HDMI add-on kit for the NES created by Kevin Horton (Kevtris), which allowed NES systems to output 480p, 720p an…Updated Oct 9, 2026NESNES:Lightgun RepairThis page lists common issues with lightguns and their fixes. NES Zapper (no information yet) Video Shooting Series Light Gun The orig…Updated Oct 9, 2026NESNES:List of Famicom Games with External AudioThe Family Computer (Famicom) featured an audio input on its cartridge port. This allowed for games to expand upon the Famicom's audio…Updated Oct 9, 2026NESNES:List of NES Games with Save BatteriesThe below list of Famicom and NES games use a save battery in the cartridge to retain save data. This list was compiled with correctio…Updated Oct 9, 2026NESNES:NES Model DifferencesSome page content & researching collaboratively taken from io55.net's NES page with permission. There are two NES models, and three mi…Updated Oct 9, 2026NESNES:NESRevival-PSUNESRevival Board Originally created by Merlin Shaw and currently maintained by Alchem and Guardians_projects, the NESRevival power sup…Updated Oct 9, 2026NESNES:NESRGBThe NESRGB is a video modification board designed by Tim Worthington to improve the video quality of the NES and Famicom. Released in …Updated Oct 9, 2026NESNES:NullCICThe NullCIC is a perfect solution to replace the original CIC lockout chip for the NES, or the open-source hardware project, OpenTendo…Updated Oct 9, 2026NESNES:PAL Exclusive Games ListAlthough the NES was not as successful in PAL territories as it was in North America or Japan, it did receive several exclusive releas…Updated Oct 9, 2026NESNES:PlayChoice-10 PPU ModA video quality comparison between the original composite PPU (left) and the RGB PPU found in the PlayChoice-10 (right). This page des…Updated Oct 9, 2026NESNES:Region Free Controller ModsThere exists some differences between controllers from PAL regions and NTSC regions. Essentially, PAL controllers have additional pull…Updated Oct 9, 2026NESNES:Region InformationThe various official models of Famicom-compatible hardware can be grouped by game connectors, video standard, and security chip. For m…Updated Oct 9, 2026NESNES:Region-Free Mod (CIC, cart adapter)Region Free Mod - this is a mod when the CIC Chip is disabled and Cart Adapter is added.Updated Oct 9, 2026