Babylon.js/assets/particles/systems/rain.json

{
    "systems":
    [
        {
            "name": "rainDense",
            "id": "rainDense",
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                "maxEmitBox":
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            },
            "textureName": "rain/Rain.png",
            "animations": [],
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            "gravity":
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            ],
            "noiseStrength":
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            ],
            "color1":
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            "color2":
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            "colorDead":
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            "spriteCellChangeSpeed": 0,
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            "spriteRandomStartCell": true,
            "isAnimationSheetEnabled": true,
            "colorGradients":
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                {
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                    "color1":
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                {
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            "textureMask":
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        },
        {
            "name": "rainSplash",
            "id": "rainSplash",
            "capacity": 100,
            "emitter":
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            "particleEmitterType":
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                "type": "BoxParticleEmitter",
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                "direction2":
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                "minEmitBox":
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                "maxEmitBox":
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            },
            "textureName": "rain/Rain.png",
            "animations": [],
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            "isBillboardBased": true,
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            "minScaleX": 0.25,
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            "minEmitPower": 10,
            "maxEmitPower": 10,
            "minLifeTime": 2.95,
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            "gravity":
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            "noiseStrength":
            [
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            ],
            "color1":
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            "spriteRandomStartCell": true,
            "isAnimationSheetEnabled": true,
            "colorGradients":
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                {
                    "gradient": 0,
                    "color1":
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                },
                {
                    "gradient": 1,
                    "color1":
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            ],
            "textureMask":
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            "customShader": null,
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            "subEmitters":
            [
                [
                    {
                        "type": 1,
                        "inheritDirection": false,
                        "inheritedVelocityAmount": 0,
                        "particleSystem":
                        {
                            "name": "splash",
                            "id": "splash",
                            "capacity": 200,
                            "emitterId": "",
                            "particleEmitterType":
                            {
                                "type": "ConeParticleEmitter",
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                            },
                            "textureName": "rain/Rain.png",
                            "animations": [],
                            "startDelay": 0,
                            "renderingGroupId": 0,
                            "isBillboardBased": true,
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                            "minScaleX": 1,
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                            "minEmitPower": 1,
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                            "gravity":
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                            "noiseStrength":
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                            "color1":
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                            "color2":
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                            "startSpriteCellID": 0,
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                            "spriteCellChangeSpeed": 0,
                            "spriteCellWidth": 128,
                            "spriteCellHeight": 512,
                            "spriteRandomStartCell": true,
                            "isAnimationSheetEnabled": true,
                            "textureMask":
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                            "customShader": null,
                            "preventAutoStart": true
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                ]
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        }
    ]
}