FamiStudio quick start
- Install FamiStudio (free, runs on Windows / macOS / Linux).
- Compose a song.
- File → Export → FamiStudio Sound Engine assembly, format ca65.
- Drag the
.sfile onto this page (or click the upload buttons below).
Want to hear something straight away? Click Load starter pack on the right — you can replace it with your own work whenever you like. Full guide in AUDIO_GUIDE.md.
🎼 Songs
Each song is a FamiStudio-exported .s file. The one marked
default plays when the game starts.
💥 Sound effects
A single FamiStudio sfx-export file holds up to 128 sound effects. Each "Song" in your FamiStudio sfx project becomes one slot here.
📐 ROM size
Engine≈ 3.5 KB
Songs0 B
Sound effects0 B
Total audio cost≈ 3.5 KB
NES ROMs have a 32 KB program budget. We warn when audio is using more than 12 KB so you've still got room for code, sprites and background data.
▶ Try it
Builds your project right now with the current audio choices and runs it in the in-browser NES emulator.