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Fluid Flux

Krystian Komisarek - Blueprints - May 8, 2022

The Fluid Flux is a powerful water system based on 2D shallow-water simulations.

  • Supported Platforms
  • Supported Engine Versions
    4.26 - 4.27, 5.0
  • Download Type
    Asset Pack
    This product contains an assortment of Unreal Engine assets which can be imported into a pre-existing project of your choice.

[River Map Video]

[Beach Map Video]

[Playground Map Video]

[Cross-Section Map Video]

[Demo] [Demo_Reupload] All assets presented in the demo are included in this pack.

[Documentation] Please read the description about limitations before buying. It is important!



  • Realtime shallow water simulation – fluid data modifiers, wave generator, and extendable interface
  • Fluid surface rendering – caustics, wetness, underwater, waterline, advected foam, advected waves, blending with the ocean, dynamic audio detection
  • Fluid Interaction – simple cheap ripple solver moving with character, optimized to an absolute minimum
  • Ocean wave blending – rendering tillable ocean heightmap texture in a single pass
  • Niagara environment interaction – High-quality effects, bouncy, plants, character swimming, boats, 
  • Clean, efficient, GPU-friendly implementation, interface designed with the KISS (Keep It Simple, Stupid) rule in mind
  • Small, compact, and low memory footprint
  • Tool for generating ultra-fast static meshes with flow maps baked into vertex color.
  • Advanced fluid state management, loading state in gameplay.
  • Niagara fluid async readback system for sampling height and flow of fluid in blueprints.
  • Dynamic audio analyzer. The sound source is positioned based on fluid movement.
  • Four example maps – beach, island, river, and baked static river
  • Uses velocity-based fluid flow advection method for foam, caustics, and waves
  • Water cross-section rendering


A detailed list of limitations can be found in the documentation [Documentation]

  • open-world is currently not supported
  • simulation can't be replicated
  • simulation is calculated in a 2d grid projected on the heightfield (captured ground)
  • system cant simulate wave breaks and splashing water
  • VR and mobile are not supported
  • currently non-tesselated plane mesh for rendering fluid surface
  • there is no integration with Water Plugin for now

Projects that use Fluid Flux:

[Brushify - Beach Pack]

Technical Details

Input: Default TPP character input

Network Replicated: No

Supported Development Platforms: Windows

Windows/Mac: Yes

Development time: 16+ months

Fluid Flux size: 120MB

  • 75 materials
  • 28 blueprints
  • 113 material functions
  • 8 interfaces
  • 24 Niagara modules
  • 10 Niagara systems
  • 37 material instances
  • 64 textures

Demo content size: 219MB (demo content can be easily removed)




Notes: The package contains textures and meshes from Starter Content and rocks from A Boy & His Kite used only for demonstration purposes. 

I am ready for your requests. Your positive reviews and comments are my fuel for the next update.