Unbelievable! I never thought someone would open-source something like this!!!

244 top-tier game pixel effects — explosions, lightning, fire, ice, portals, magic circles, ultimate combos…

Things that other people sell in asset packs for hundreds or thousands of dollars — this guy just put the whole thing out under the MIT license, completely free and open-source, totally fine for commercial use 😂

The best part? These aren’t static video clips — they’re rendered in real time, entirely in code…

And the most impressive thing of all? It ships with a Claude Code Skill built right in!

I dug through the whole thing, so let me break down why it’s so amazing:

1. All 244 effects are generated in real time by code — zero image assets: Every frame is computed in pure JS, complete with built-in glow layers. Just open the page in a browser for real-time previews. Swap colors, resize, mirror-flip — turn a fireball into ghostly blue flame in a second. No need to beg your artist for new sprites.

2. Even the Dead Cells-style hit feedback is already built in: Ordinary effects look like dead stickers slapped on screen. This project builds a 3D-rigged pixel dummy entirely in code, with attack windup, hitstop frames, screen shake amplitude, and hit knockback all exposed as ready-to-tweak parameters. A full combo chain feels absurdly smooth.

3. It turns Claude Code into your personal VFX artist (the killer feature): AI-generated animations used to always look cheap and plastic. This project packages the whole loop — write code → render multi-frame sprite grids locally → let the AI inspect the images and spot issues → automatically check for out-of-bounds and dropped frames — into a ready-made Skill. You just tell the AI: “Add a frost nova to the mage’s ultimate, and make the hits feel heavier” — and it reviews the rendered frames itself, iterating until it looks right.

4. Works with every engine, one-command sprite sheet export: For web-based mini-games, just copy the code and run it. For Unity, Godot, pixel-art animations, or AI video — run a single command to export a transparent-background Sprite Sheet, ready to drop in.

Bottom line: whether you’re an indie dev building a game or making pixel-art animation videos, this saves you thousands of dollars on asset packs and art outsourcing.

Seriously recommend starring or forking the repo now — you’ll absolutely need it on future projects!!!

Play online: https://patch-gg.github.io/pixelfx/

🔗:https://github.com/patch-gg/pixelfx…

pixelfx

Source: https://patch-gg.github.io/pixelfx/ Pixel art effects, every one a small piece of code.