Witch Cauldron Brew: A black cauldron over a crackling fire bubbles with a glowing green brew: bubbles swell and pop, green steam rolls up as simulated gas and motes drift.

Witch Cauldron Brew

A black cauldron over a crackling fire bubbles with a glowing green brew: bubbles swell and pop, green steam rolls up as simulated gas and motes drift. A seamless 2D Halloween witch and alchemy loop.

Witch Cauldron Brew is an HD effect that loops seamlessly every 4 seconds, drawn on a 320 by 384 canvas. It is built from 1 simulated smoke and fire layer and 5 particle emitters. Most layers blend additively, so it glows on dark backgrounds.

Colour

Recolours the preview and the free downloads.

Free download with a transparent background, cropped to the effect, 120 frames at 30 fps. Use it in commercial games, no credit needed.

Licence: use it in any project, including paid commercial games such as a game sold on Steam. There is no per-project licence to buy and no credit needed. Terms.

Roblox: the download is a flipbook for a ParticleEmitter. Set FlipbookLayout to Grid8x8, FlipbookMode to OneShot and Lifetime to 4, then emit one particle per cycle. Roblox setup.

REMIX WITH AI

Try:

Left empty, it just opens in the agent, free. Each change is one AI build, and you start with free builds.

Engine data for Unity, Godot, GameMaker and Aseprite comes with a plan: open it in the studio.

OPEN IN THE STUDIO

Change the colours, timing or size, or export for Unity, Godot 4, GameMaker, Phaser, PixiJS and Aseprite.

Try variations: new colours, motion and shapes of this effect, free in the studio.

FRAME BY FRAME

8 evenly spaced moments across the 4 s loop.

Witch Cauldron Brew at 8 moments, from 0 s to 3.5 s

HOW IT'S MADE

Witch Cauldron Brew is built around a fluid simulation of fire and smoke on a grid, with 5 particle emitters on top. Techniques worth a look: sub-emitters set off by other particles and post filters (bloom and vignette). 4 scene layers (ground and props) show in the studio for context and stay out of every export.

Every layer emits continuously and the 4 s loop closes seamlessly, so it can run for as long as you need. To change the flame colour, select "Green steam" and edit Fire colours; Smoke colour sets the smoke. The colour swatches by the downloads recolour every layer at once.

Layers, in draw order

  1. Brew light, Fire light, Brew glowsprite / additiveA placed glow.
  2. Fireparticles / additiveA steady stream of flames along a line. They float upward and swell and then shrink away. Colour runs from pale gold to red over each life.
  3. Brew surfacespriteA placed shape.
  4. Green steamfluidSimulated fire and smoke from a line.
  5. BubblesparticlesA steady stream of bubbles from a disc. They set off "Bubble pop" when they die, set off "Pop ring" when they die and grow as they age. Colour: green.
  6. Bubble popparticles / additiveSoft glows set off by "Bubbles". They fall under gravity. Colours range between pale green and green.
  7. Pop ringparticles / additiveRings set off by "Bubbles". They grow as they age. Colour: green.
  8. Witch motesparticles / additiveA steady stream of soft glows from a disc. They sway from side to side. Colours range between pale lime and green.

DETAILS

Length
4 seconds, seamless loop
Canvas
320 x 384, HD
Layers
5 emitters
Blend
Mostly additive (glows)
Colours
greenorangepale greenpale lime
Sprites
Kenney Particle Pack by Kenney (CC0)
Tags
cauldron, witch, potion, brew, bubbles, halloween, alchemy, loop

USING IT IN YOUR GAME

Phaser, PixiJS
The PNG sheet is a plain grid of frames that both can slice. A TexturePacker JSON atlas comes with a plan, from the studio.
Unity
Import the PNG sheet as a Sprite with Mode set to Multiple and slice it, or open the effect in the studio for a ready-made grid.
Godot 4, GameMaker, Aseprite
Open it in the studio and pick your engine in Export: with a plan, it writes the files that engine imports.
Web and chat
The GIF plays anywhere; the APNG keeps soft edges on any background.
Blend mode
This effect is made of light. For the same glow in your game, draw the sprite with additive blending, or export it on black from the studio for additive shaders.

Step by step: Unity, Godot 4, Roblox, GameMaker, Phaser and PixiJS, Aseprite, Web games (live runtime). Drawn with additive blending: see glow effects without a black box.

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