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Let’s verify that your free copy of V1.6.1 works correctly.

Uses mesh displacement based on the scene's height field to simulate water flow .

is a high-speed, lightweight fluid simulation add-on for Blender (3.6 LTS or newer). Unlike traditional heavy physics simulations, it uses a 2.5D approach powered by Geometry and Simulation Nodes, which calculates water movement on a height field rather than with 3D particles. Review Highlights

The emergence of represents a significant shift in how artists approach liquid dynamics within Blender. By moving away from traditional, resource-heavy particle systems, this addon leverages Geometry Nodes and Simulation Nodes to achieve what is often described as "2.5D" fluid simulation. The Technical Evolution of 2.5D Fluids