# fogleman/nes

NES emulator written in Go.

Repository: https://github.com/fogleman/nes
Canonical: https://ross.abutalabs.com/products/nes
Language: Go
License: MIT
License Family: permissive
Last push: 2024-08-17T18:24:23+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4202, "days_push": 746, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5654, forks 532 (observed 2026-08-28T04:09:27.190805+00:00)

## What it is
An NES (Nintendo Entertainment System) emulator written in Go with a graphical menu for browsing ROMs. It emulates the 6502 CPU, PPU, and APU, supporting six common mappers that cover roughly 85% of all NES games.

## Use cases
- play NES games on my computer
- emulate Nintendo Entertainment System ROMs
- learn how an emulator works internally
- study the 6502 CPU and NES PPU
- run retro games with keyboard or joystick controls

## When to choose
- you want a simple, cross-platform NES emulator built from source in Go
- your games use NROM, MMC1, UNROM, CNROM, MMC3, or AOROM mappers
- you want readable source code to learn emulator development

## When to avoid
- you need high-accuracy emulation with perfect PPU timing or APU sound
- your games use mappers outside the six supported ones
- you want save states, netplay, or shader features common in mature emulators

## Facets
- artifact type: application
- maturity: maintenance
- function: game-engine, graphics, audio-processing, gui
- domain: gaming-tools, simulation, cross-platform
- platform: go, windows, cross-platform
- tags: nes-emulator, emulation, retro-gaming, 6502-cpu, go-gl, linux, macos, desktop

## Member repositories
- fogleman/nes (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:27.190805+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:55:15.628104+00:00, confidence not recorded.
  - readme: https://github.com/fogleman/nes (fetched 2026-08-28T04:09:27.190805+00:00, sha a3712bc0b116)
- Data as of 2026-08-30T08:39:29.467469+00:00.