About Fluid Frenzy

Key Features Contents Requirements Limitations Pipeline Support Platform Support Feature Support

Installation

Package Manager Unity Package File

Samples

Importing Samples Universal Render Pipeline Running Samples River Grand Canyon Water Modifiers Volcano Terraform Fossil Finder Pool Simple Terraform Tiled Simulation World Runtime Setup State Sync GPULOD Terrain Scene Configuration

Setup

Simulation Time Step Water Simulation Terraform Simulation Layer Capture Simulation Baked Surface Playback Simulation Regions Fluid Channels Shader Stripper GPULOD Displacement Waves Flow Mapping Ocean FFT Cascades Sampling Universal Render Pipeline High-Definition Render Pipeline

Fluid Frenzy Toolbar

Accessing the Toolbar Simulation Preview Modes Sculpt Mode Modifier Mode Shared Settings Terrain or Fluid Layer Splat Channels Blend Mode Tool Properties

Fluid Simulation Components

Fluid Simulation Terrain and Obstacle Input Boundary Conditions Side Border Settings Domain Solver Initial Conditions Terrain & Ground Simulation Culling Extension Layers Create Collider Fluid Simulation Settings Creation Properties Second Layer Flux Fluid Simulation The Pipe (Flux) Model Simulation Characteristics Flux Fluid Simulation Settings Creation Specialized Flux Properties Flow Fluid Simulation The 2D Height Field Model Performance and Stability Solver Ocean FFT Coupling Flow Fluid Simulation Settings Creation Specialized Flow Properties Fluid Simulation Static Fluid Surface Bake Foam Layer Foam Layer Settings Foam Render Settings Foam Decay Settings Foam Pressure Settings Foam Wave Settings Shallow Foam Settings Turbulence Foam Settings Wetness Layer Wetness Layer Settings Rendering Settings Decay Settings Fluid Flow Mapping Fluid Flow Mapping Settings Erosion Layer Multi-Layer Terrain System Terrain Modification Processes Erosion Settings Terraform Layer Liquefaction (Solid Terrain to Fluid) Fluid Contact Reactions (Fluid and Terrain) Fluid Mixing (Fluid + Fluid to Solid Terrain) Fluid Contact Reaction Terraform Settings Terrain Modifier Terrain Modifier Settings Sediment Modifier Sediment Modifier Settings Terraform Modifier Fluid Particle Generator Splash Particles Surface Particles Fluid Particle System Fluid RigidBody Prerequisite Fluid Density Calibration Interaction Calculation Fluid Displacement Profile Fluid Interaction Profile Fluid RigidBody Lite Fluid Floater Fluid Simulation Obstacle Settings Fluid Event Trigger Fluid Ripple Zone (Beta) Fluid Ripple Impulse (Beta)

Fluid Rendering Components

Fluid Renderer Fluid World Renderer Fluid Renderer vs Fluid World Renderer Setting up a tiled world Which simulations are included General Mesh Rendering Water World Renderer Ocean FFT Settings Surface Renderer Render Properties Detail Wave Effect Detail Wave Settings HDRP Water Surface Properties Water Rendering Water Surface Underwater Effect Underwater Settings Current Particles Current Particle Settings Wet Lens Effect Wet Lens Settings Caustics Effect Caustics Settings Surface Reflections Fluid Decal Renderer Lava Lava Surface Under Lava Effect Shadows HDRP Water System

Fluid Shaders

Water Shader Stylized Water Shader Toon Water Shader Lava Shader Particle Shaders Fluid Decal Shader

Terrain

Simple Terrain Eight-layer terrain Terrain sculpting and painting Brush stamps Sculpt tools Height layers and splat Scene View shortcuts Strength, undo, and preview Terraform Terrain Terraform Terrain Shader Terraform Terrain (Single Layer) Shader

Fluid Modifiers

Fluid Modifier Volume Fluid Source Settings Fluid Flow Settings Fluid Force Settings Fluid Modifier Path Fluid Modifier Waves Fluid Modifier Pressure Foam Modifier

C# Interaction & Scripting

Fluid Simulation Manager Simulation control Multiplayer hooks (Beta) Adding fluid Adding sediment Applying flow and forces Sampling the simulation Per-simulation brushes Creating simulations, modifiers, and obstacles Simulations Surfaces In-memory settings Extension layers Terraform terrain and simulation Editor presets Fluid modifiers Terrain and terraform brushes Obstacles

Using ShaderGraph

Fluid Simulation Nodes Terraform Terrain Nodes Particle Nodes Current Displacement Shaders

Tiled Simulations

Purpose Setup Padding for Continuity

Physics Colliders

Which collider to use Surface Collider GPU-CPU Synchronization and Performance Collider Properties

Simulation Debugger

Edit Mode Preview

AI Skills

How to use them

Third-party Support

Enviro 3 Sky and Weather COZY: Stylized Weather 3 Curved World

Future Updates & Roadmap

Fluid Frenzy: 2026 Development Roadmap Roadmap Overview Upcoming Feature Breakdown Old Roadmap

Tiled Simulations

Tiled Simulations were introduced in Fluid Frenzy in version v1.0.6 as a beta feature. If you encounter any bugs, issues, or have suggestions, please report them here.

Purpose

When building a large world with multiple terrains, Fluid Frenzy allows you to place a dedicated simulation on each terrain tile and seamlessly connect them. This Tiled Simulation feature enables neighboring simulations to interact dynamically, allowing fluid to flow freely and continuously across the boundaries between tiles.

Setup

You can configure neighbors using one of two methods:

Neighbouring simulations can be added quickly using the scene view gizmos, which function similarly to how the Unity Terrain system adds adjacent tiles.

  • Process: Pressing the gizmo adds a new Fluid Simulation.
  • Automation: The system attempts to automatically copy all settings assigned to the original fluid Simulation to the new simulation and connect up any terrain (if available).

Tiled Simulation Gizmos

2. Manual Setup

Alternatively, neighbors can be set up manually via the Inspector.

Tiled Simulation Inspector

Padding for Continuity

When neighboring tiles utilize advanced features such as flow mapping, foam generation, or dynamic velocity, they require extra border padding. This padding ensures that the edges of one tile receive enough data from its neighbor to maintain smooth flow and feature continuity across the seam for optimal performance.

  • Setting Location: The setting for padding (paddingScale) can be found on the Fluid Simulation Settings.
  • Default: The amount of padding required depends on the resolution of the texture and defaults to 0%.
  • Adjustment: The padding can be increased in increments that are multiples of two.

alt text

The World sample uses a Water World Renderer to draw a large ocean around a coastline simulation. That is a rendering setup. It is not the same as linking neighbour tiles here.