Wildseyed on itchio has launched Zombiii Video Music - a full-fidelity software emulation of the 1977 Atari Video Music C-240

It captures the analog soul of the original hardware: audio-driven shapes, color cycling, and NTSC-style glow, all powered by live stereo input or microphone.

Built from the original circuit of the C-240 and an NTSC CRT, it recreates the internal logic:
  • Real-time stereo envelope + zero-crossing color engine
  • Solid, Hole, and Ring shape modes with authentic array controls (H 1/2/3/5 × V 1/2/4/8)
  • NTSC composite emulation for that vintage soft scanline feel
  • OSC Integration with TouchOSC or other OSC client software
The Atari Video Music (C240) was an experimental home entertainment device released by Atari in 1976. Designed by Atari engineer Bob Brown, it wasn’t a game system but one of the earliest consumer audiovisualizers: you plugged it into your stereo and TV, and it generated colorful, abstract geometric patterns in real time based on whatever music you played.

You can download the emulator here:

wildseyed.itch.io/zombiii-video-music

(Main image : Wikipedia / ctrl-alt-Rees)

There is also a prior open source emulator which you can find out more about here: