NixieFX is a free browser-based particle and VFX editor for Three.js and PixiJS web games, with an open-source runtime, CLI, and dedicated coding-agent skills.
Hi Product Hunt. We built NixieFX because creating particle effects for web games often means choosing between hand-editing configs and adopting a much larger engine workflow.
NixieFX gives Three.js and PixiJS teams a focused visual workspace for particles and materials. You can build multi-emitter effects on a timeline, tune curves and gradients, preview the result, validate backend support, and export a bundle for your game. Projects stay in your own folder as plain JSON, so they work well with source control and existing asset pipelines.
The editor is free to use, requires no account, and does not lock projects into a hosted service. The runtime is MIT licensed. We also added a CLI and dedicated coding-agent skills for teams that want to automate effect creation, validation, and integration.
We would especially value feedback from developers shipping browser or Capacitor games with Three.js, PixiJS, or both. What part of your current VFX workflow takes the most time?