How to Set Up bsnes-hd and Snes9x — Complete SNES Emulator Guide 2026

There are two main SNES emulators in 2026:

• bsnes-hd — highest accuracy + HD Mode 7 upscaling (F-Zero, Super Mario Kart, Secret of Mana maps look stunning in HD). Best choice if you have a mid-range or better PC.
• Snes9x — fastest, lowest CPU usage, excellent compatibility. Best for lower-end PCs or if you don't care about HD Mode 7.
• Both are available as standalone or as RetroArch cores (bsnes-hd core + Snes9x core).

Setting up bsnes-hd (standalone)

1. Download from github.com/DerKoun/bsnes-hd — grab the latest release ZIP for your OS
2. Extract and run bsnes.exe (Windows) / bsnes (Linux/Mac)
3. No BIOS required — bsnes has a built-in HLE BIOS. For 100% Super Game Boy accuracy, optionally add SGB1_ROM.sfc or SGB2.sfc
4. File → Load Game → select your .sfc / .smc / .zip ROM file
5. Settings → Video → Scale: set to 4x or 6x for 1080p/1440p displays

Setting up Snes9x (standalone)

1. Download from snes9x.com — Windows 64-bit ZIP
2. Extract and run snes9x-x64.exe — no installer needed
3. No BIOS file required
4. File → Load ROM Image → select your .sfc / .smc ROM

HD Mode 7 is the flagship feature of bsnes-hd. It replaces the SNES's low-resolution Mode 7 perspective rendering (used in F-Zero, Super Mario Kart, Pilotwings, Chrono Trigger world maps) with crisp, high-resolution versions.

Enable HD Mode 7:

1. Settings → Video → HD Mode 7: Scale → set to 8x or 16x (diminishing returns above 8x)
2. Settings → Video → HD Mode 7: Perspective correction → enable (fixes affine warping)
3. Load a Mode 7 game (F-Zero, Super Mario Kart, Pilotwings) — the difference is immediately visible

Widescreen patching (16:9 SNES output)

• bsnes-hd includes experimental widescreen support for many games
• Settings → Video → Widescreen mode → Widescreen (crops to fill, or expands viewport)
• Not all games support widescreen cleanly; some show graphical artifacts at screen edges
• Best supported: F-Zero, Super Metroid, Super Mario World

Video output settings for best image quality:

• Settings → Video → Output: Scale (integer scaling preserves pixel art sharpness)
• For CRT shader look: use RetroArch bsnes-hd core → Shaders → CRT-Royale or CRT-Guest-Advanced
• Snes9x: Video → Maintain Aspect Ratio ON, Integer Scaling ON, OpenGL renderer

Controller setup

• Plug in any USB or Bluetooth controller — Xbox, DualShock 4, DualSense, 8BitDo all work
• bsnes-hd: Settings → Controllers → Port 1 → select controller type → map buttons
• Snes9x: Input → Joypads → Joypad #1 → click each button and press your controller button
• For SNES-accurate layout: 8BitDo SN30 Pro mirrors the original SNES controller button placement

Save states

• Both emulators support save states: press F5 to save, F7 to load (default; remappable)
• Battery saves (.srm files) work in both — these persist automatically like a real cartridge
• Save state files are separate from battery saves; keep backups of .srm files

bsnes-hd vs Snes9x — when to use each:

• Use bsnes-hd when: you want HD Mode 7, maximum accuracy, or widescreen patches; PC with 4+ cores recommended
• Use Snes9x when: you want fastest performance, lowest RAM usage, or are on an older PC; Snes9x runs on a Raspberry Pi 3
• Use RetroArch bsnes-hd core when: you want HD Mode 7 alongside other systems in one frontend
• Use RetroArch Snes9x core when: you want a unified retro setup — EmuDeck and Batocera use this by default
• Compatibility: both run 99%+ of the SNES library; differences are edge-case audio timing in a handful of games

Fast forward and rewind

• Fast forward: hold Tab (bsnes-hd) or ~ (Snes9x) to run at 400%+ speed — great for grinding/farming
• Rewind: bsnes-hd has built-in rewind — Settings → Emulator → Enable Rewind. Snes9x does not; use RetroArch Rewind feature with Snes9x core instead

Cheat codes

• Both support Game Genie and Pro Action Replay codes
• bsnes-hd: Tools → Cheat Codes → Add cheat → enter code
• Snes9x: Cheats → Add Cheat → enter Game Genie or raw hex address/value

Peripheral support

• Super Scope (light gun): both support mouse emulation for Super Scope games (Yoshi's Safari, Bazooka Blitzkrieg)
• Super Multitap: Snes9x supports 4-5 players via multitap; configure in Input → Multitap
• Super Game Boy: bsnes-hd supports SGB with SGB ROM — plays original Game Boy cartridges with SNES border

Other options worth knowing

• Mednafen — another high-accuracy SNES emulator (Linux-focused, command-line config)
• ZSNES — ancient, do NOT use; very inaccurate and has known security vulnerabilities
• RetroArch bsnes-accuracy core — based on original bsnes without HD features; useful for tool-assisted speedruns (TAS) where byte-exact behaviour is required