Libretro Snes9X is an upstream port of Snes9x, a portable Super Nintendo Entertainment System emulator to Libretro.
¶ 
License
This core is under non-commercial license.
¶ 
Compatibility
| RPI0/RPI1 | RPI3 | RPI4/RPI400 | RPI5 | ODROID XU4 | OGA/OGS/RG351 | PC | RG353 |
|---|---|---|---|---|---|---|---|
| ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
¶ 
Features
| Feature | Supported |
|---|---|
| Restart | ✔ |
| Screenshots | ✔ |
| Saves | ✔ |
| States | ✔ |
| Rewind | ✔ |
| Netplay | ✔ |
| Core Options | ✔ |
| RetroAchievements | ✔ |
| RetroArch Cheats | ✔ |
| Controls | ✔ |
| Remapping | ✔ |
| Softpatching | ✔ |
¶ 
BIOS
No bios is required.
¶ 
Roms
¶ Supported extensions:
Roms must have the extension:
- .fig
- .gd3
- .sfc
- .smc
- .swc
- .zip
- .7z
This system supports compressed roms in .zip/.7z format. However, be careful, it is only an archive.
The files contained in the .zip/.7z must correspond to the extensions mentioned above.
Moreover, each .zip/.7z file must contain only one compressed rom.
¶ Location
Put the roms like this:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 snes
┃ ┃ ┃ ┃ ┣ 🗒 game.zip
The roms using No-Intro format are highly recommended.
For more information about roms, go to this tutorial!
¶ 
Advanced configuration of the emulator
To be able to keep your custom configurations during an upgrade, we advise you to use our configuration override feature.
¶ Accessing to options
You can configure various options in two different ways.
- Via RetroArch menu:
┣ 📁 RetroArch Menu
┃ ┣ 📁 Core options
┃ ┃ ┣ 🧩 Name_option
- Via the file
retroarch-core-options.cfg:
┣ 📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 system
┃ ┃ ┃ ┣ 📁 configs
┃ ┃ ┃ ┃ ┣ 📁 retroarch
┃ ┃ ┃ ┃ ┃ ┣ 📁 cores
┃ ┃ ┃ ┃ ┃ ┃ ┣ 🧩 retroarch-core-options.cfg
¶ Core options
| Options | Options values | Variables (for configuration override) | Variables values |
|---|---|---|---|
| Console Region (Restart) | Auto ✅ / NTSC / PAL |
catsfc_VideoMode |
auto / NTSC / PAL |
| Frameskip | Disabled ✅ / Auto / Manual |
catsfc_frameskip |
disabled / auto / manual |
| Frameskip Threshold (%) | 15 / 18 / 21 / 24 / 27 / 30 / 33 ✅ / 36 / 39 / 42 / 45 / 48 / 51 / 54 / 57 / 60 |
catsfc_frameskip_threshold |
15 / 18 / 21 / 24 / 27 / 30 / 33 / 36 / 39 / 42 / 45 / 48 / 51 / 54 / 57 / 60 |
| Reduce Slowdown (Hack, Unsafe, Restart) | Disabled ✅ / Compatible / Max |
catsfc_overclock_cycles |
disabled / compatible / max |
| Reduce Flickering (Hack, Unsafe) | Disabled ✅ / Enabled |
catsfc_reduce_sprite_flicker |
disabled / enabled |
¶ 
External links
- Source code used: https://github.com/libretro/snes9x2005/
- Libretro documentation: https://docs.libretro.com/library/snes9x_2005/