Give your isometric world some atmosphere.
Rain hitting rooftops, smoke drifting from a campfire, waterfall spray and wisps at twilight. World Atmosphere brings 37 editable environmental presets to Unity 6.3 LTS and URP: six core effects plus 31 additional studies and variations.
Weather, ambience and environmental fire
- Rain with collision splashes, snow, broken ground mist, campfires, smoke and drifting leaves.
- Waterfall spray, roof runoff, cave drips, shoreline foam, fireflies, motes, wisps and environmental hazard visuals.
- A configurable wall of fire: length, height, curve, intensity, terrain contact, smoke, embers and optional point lights. Persistent overlapping flames keep tested large wall shapes connected within bounded particle counts.
- Editable C# sources, materials and presets. Control activation, fading, wind and density from your game.
Try the free Windows demo
The separate demo lets you walk through the preset gallery, switch daylight/twilight and adjust density and wall dimensions. Use the file under Download demo on itch.io; no source purchase is needed.
Inside the paid download
- WorldAtmosphere-1.0.0.unitypackage, with 37 prefabs.
- Runtime C#, shaders, editable textures, materials and meshes.
- Optional playable sample scene and demonstration proxy/fixtures, quickstart, source/provenance notices and single-entity license.
Camera Toolkit and Lighting Toolkit are separate products, and neither is required.
Requirements and scope
Qualified on Unity 6000.3.27f1 (6.3 LTS), URP 17.3.0 Forward, Windows x64 / Direct3D 11. Enable Depth Texture for soft particle intersections. The sample uses no HDR or post-processing. Built-in and HDRP are unsupported; other versions, platforms and graphics APIs are unqualified.
Presentation effects, not fluid simulation or a weather simulation framework: no accumulation, audio, gameplay damage or navigation blocking. The 37 items include variations, not 37 separate simulations. Roof runoff and waterfall placement are authored, not automatic roof/water detection. Six original broad-scene presets retain sample layout offsets; inspect emitter positions when placing them. The wizard from earlier promotional material is excluded; this listing uses captures of the included technical sample.
Installation
Extract the paid ZIP, read Quickstart.md, then import WorldAtmosphere-1.0.0.unitypackage via Assets > Import Package > Custom Package. Enable URP Depth Texture and drag a Content prefab into your scene. Review the optional sample setup before changing production project settings. For the free player, extract the entire demo ZIP and run its Windows executable.
License and support
One purchasing individual or legal entity, including employees and contractors working on its projects. Commercial game use and editable source; no extra developer seats. Standalone redistribution is prohibited. Updates included when released, without a promised schedule. Support: hello@isoguild.com. Website purchases follow the studio terms; itch.io purchases follow itch.io payment, delivery and refund procedures and applicable consumer rights.
Development
AI assisted implementation and documentation under publisher direction and review. Flame imagery includes AI-generated artwork, documented in the included provenance notice. No runtime AI service is required.
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In the sample
