INSERT CARTRIDGE. PRESS START.

NES games.
Synth hardware.

Your favorite little synth has a new game to play. Load a cartridge, turn up the chiptunes, and take 8-bit adventures from your browser to the FM-1.

Play a homebrew Build firmware ↓

FM-1 firmware · SMK37 browser simulator & development builds

Detailed red SMK-37 illustration with CodeMaster on its screen — REAL GAMES. A DIFFERENT KIND OF KEYBOARD.

FM-1 illustration playing From Below — REAL GAMES. A DIFFERENT KIND OF KEYBOARD.

THE STARTER COLLECTION

Small cartridges. Big ideas.

Three free homebrews. One click to play.
Or bring your own .nes or .zip.

01 / FALLING BLOCKS

From Below

Stack blocks. Clear lines. Keep the kraken at bay.

Matt Hughson · MIT

02 / CODE-BREAKING PUZZLE

CodeMaster

Four symbols. Ten guesses. Crack the secret code.

Daniel Vukelich · GPL-3.0

03 / MINI ARCADE

Diamond Chase

A tiny chase with a chiptune reward. Find the yellow target.

TeneoPython01 · MIT

NES ENTERTAINMENT EXPERIMENTREADY

PLAY ON

VIDEONTSC / 60 HZ

POWEROriginal diagnostic

FM-1 / SMK37

01 / CARTRIDGE SLOT

What are we playing?

INSERT CARTRIDGEDrop a .nes or .zip here, or click to choose

OR START HERE

NTSC · iNES 1.0 · Mappers 0, 1 & 9
ZIPs open automatically. Your files stay on this computer.

Loading emulator…

Browse your ROM folder

Choose a folder to browse its .nes and .zip files locally. Nothing is uploaded.

Choose folder

No folder selected.

02 / CONTROL DECK

VOLUME 25%

Sound starts when you load a cartridge or use a game control.

MOVE: Arrows / WASD
A / B: Enter / X · Space / Z
START / SELECT: P / Shift

Try it: move the diamond. Hold A to change pitch, B to change color.

03 / NEXT LEVEL

From browser to instrument.

Put your cartridge on the FM-1. Build your firmware here, connect by USB, and install.

OPEN FIRMWARE DECK ↓

03 / FIRMWARE DECK

Take the game with you.

DUAL CORE / EXPERIMENTAL

Build a cartridge firmware locally, then install over USB. Your ROM stays on this computer.

YOUR INSTRUMENT

Checking firmware version…

No device connected.

Load a cartridge to build firmware.

HARDWARE STATUS

FM-1 picture, controls, USB updating, and both cores have been tested. Adaptive drawing prioritizes game timing and audio. Compatibility remains experimental.

SMK37 builds and controls are checked in development. SMK37 USB flashing is not enabled yet.

Install progress & recovery

Keep your instrument connected until its restart is verified.

Restore original FM-1 firmware

Restore the official M-VAVE V15 firmware. The file is included and verified before any transfer.

Ready when you need it.

This replaces NESynth with the original synth application.

KEEP YOUR PROGRESS

Battery saves stay in this browser. Export a copy to take them with you.

Import save

NES games.Synth hardware.

Small cartridges. Big ideas.

From Below

CodeMaster

Diamond Chase

Take the game with you.

NES games.
Synth hardware.