Effekseer VFX Skill
Agent skills that build game VFX for Godot and Unity
- Best for
- Godot or Unity developers who want a coding agent to draft, build and review particle effects such as projectiles, impacts and beams
- Makes
- Effekseer particle effects (.efkefc/.efk) for Godot 4, plus video flipbook sheets for Godot or Unity 6 (URP)
- Made by
- KanaWorks_AI (Tokyo AI Visuals LLC)
- Where you use it
- CLI, macOS, Windows, Linux
- Engines
- Godot, Unity, Effekseer
- Pricing
- Free and open source (MIT) as of November 2026; video and image models you use with it are billed by their own providers
- Free plan
- Yes
- Open source
- Yes (MIT)
- Export
- Effects are saved as Effekseer .efkefc sources and .efk runtime files with a manifest; the README says the effects, textures and flipbooks you make are yours
- Status
- Available
Effekseer VFX Skill is a pair of open-source agent skills from KanaWorks_AI, the brand of Tokyo AI Visuals LLC, that let a coding agent such as Claude Code, Codex or Cursor make real-time visual effects for games. It targets Effekseer, a free, open-source particle effect tool, and plays the results in Godot 4; since version 0.3, video-flipbook effects can also be set up in Unity 6 with URP.
According to the project's README, the agent works in short build-and-check rounds, much as a human effects artist would: it writes a short design brief, gets painted textures from an image model (or asks you for them), writes the effect as a Python recipe built from about 30 layer primitives, compiles it with the official EffekseerCore, then captures a filmstrip of the effect in a Godot test scene and changes one thing per round. A second skill, vfx-review, has a separate agent score the result without seeing the recipe. Version 0.3 (October 29, 2026) added two more routes: turning clips from an image-to-video model into flipbook sheets, or combining a flipbook with procedural layers.
The skills are free under the MIT license and come with 16 example effects. The full build and render path needs Python 3.11+, Godot 4 and about 250 MB of tools on an Apple silicon Mac or Windows x64 PC. Any image or video model you pair it with has its own costs and terms. AIGamer has not tested it.
Limitation: Building and rendering effects is verified only on Apple silicon Macs and Windows x64, per the README; Linux is verified for authoring only, and the review step needs a windowed Godot (no headless Linux capture)
FAQ
Is Effekseer VFX Skill free?
Yes. The skills are open source under the MIT license, according to the GitHub repository. Image and video models you use alongside them are billed and licensed by their own providers.
Which agents and engines does Effekseer VFX Skill work with?
The README lists Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and other Agent Skills hosts. Procedural effects play in Godot 4 through Effekseer; video-flipbook effects can also be set up in Unity 6 with URP.
Does Effekseer VFX Skill work on Linux?
Only partly. The README says Linux runs the authoring mode (briefs, recipes, linting and texture work) and its build path is unverified; compiling effects and the Godot review capture are verified on Apple silicon Macs and Windows x64.
Who owns the effects I make with it?
The README says the effects, textures, flipbooks and Unity skills you build in your own project are yours; clips from video models follow that model's terms.
Sources
Compiled by AIGamer from Effekseer VFX Skill's own pages and the sources below, checked 7 November 2026. We haven't tested Effekseer VFX Skill hands-on.
- KanaWorks_AI: effekseer-vfx-skill README (GitHub)
- KanaWorks_AI: kanaworksai-hue GitHub profile
- KanaWorks_AI: LICENSE (MIT)
- KanaWorks_AI: Commit: v0.3 video-flipbook workflow and Unity (URP) pipeline
- KanaWorks_AI: Claude Code plugin manifest
- Effekseer: Effekseer: particle effect creation tool
Image: KanaWorks_AI
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