The INSYDIUM Fused 2025.4 Update is officially here, and it’s one of the most significant jumps forward for NeXus users in years. This release brings a completely re-engineered GPU core, next-generation smoke, fire, and liquid simulation tools, and an entirely new layered modifier workflow built for modern production demands.

Whether you create VFX, motion graphics, or complex procedural environments in Cinema 4D, this update is designed to improve both your creative flexibility and your simulation performance.

Let’s break down everything new in INSYDIUM Fused 2025.4.

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A Re-Engineered NeXus GPU Core

The heart of the 2025.4 update is the rewritten NeXus GPU Core, designed from the ground up for faster, smoother, and more efficient simulation workflows.

What’s improved

• Faster simulations with dramatically improved responsiveness
• Lower VRAM usage, allowing bigger scenes to run more efficiently
• Smoother GPU interaction across all simulation types
• Layered GPU falloffs for blending modifier effects with precision
• Expanded Data Mapping with looping options for procedural control

This core overhaul sets the foundation for the new simulation tools that arrive with the 2025.4 release.

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Next-Gen VFX Simulation Tools

INSYDIUM Fused 2025.4 delivers major upgrades to smoke, fire, and liquid workflows with new GPU-driven toolsets and advanced solvers.

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nxExplosiaFX: GPU Smoke & Fire Simulation

One of the biggest highlights of this update is nxExplosiaFX, bringing fast, realistic, and fully GPU-powered smoke and fire to NeXus.

You can now emit smoke and fire from:

• Objects
• Splines
• Vertex maps
• Shaders
• Particle systems

Its layered system allows you to control emitters, collisions, and forces with incredible precision. The GPU viewport renderer also provides volumetric previews and useful diagnostic tools, giving you near-final-quality feedback while you work.

Perfect for everything from subtle smoke wisps to massive explosions.

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nxFluids: FLIP + APIC Solvers for High-Fidelity Liquids

Liquids take a major step forward with brand-new FLIP and APIC solvers, enabling more advanced and realistic behaviors such as:

• Variable viscosity
• Thin liquid sheeting
• Surface tension tendrils
• Stable large-scale fluid interactions

These solvers feel more natural, more controllable, and more production-ready than ever.

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nxMesher: GPU Liquid Meshing

The new GPU-powered nxMesher creates smooth, flicker-free liquid meshes with multiple meshing modes and layered smoothing.

It also outputs:

• Particle color
• Particle velocity
• Emitter IDs

These channels give you better motion blur control and deeper shading possibilities inside your renderer.

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nxFoam & nxSplash: Foam, Bubbles, Spray & Crown Splashes

• nxFoam has been completely rewritten. Its new layer-based system lets you art-direct foam, spray, and bubbles with far more control.

• nxSplash generates procedural crown splashes using intuitive handles and bezier curves perfect for stylized or realistic water impacts.

Together, these tools round out the most complete liquid simulation workflow NeXus has ever offered.

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Smarter, Layer-Based NeXus Modifiers

One of the most user-friendly changes in INSYDIUM Fused 2025.4 is the new layered modifier workflow.

Many NeXus modifiers now let you stack and blend multiple behaviors inside a single modifier:

• nxTurbulence
• nxScale
• nxLimit
• nxSpeed
• nxColor
• nxSpin

This approach eliminates overly complex node setups and makes it easier to build advanced particle behavior with clarity and control.

New & enhanced modifiers

• nxDirection: new GPU modifier for directing particle flow, vortexes, and chaotic streams.
• nxFollowGeo: now supports multiple splines with Guide mode for path following and Force mode for chaotic streams.
• nxQuestion: improved with organic variation options and upgraded Particle Neighbor searches.

This entire workflow is designed for speed, simplicity, and creative freedom.

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Jidou: A New Procedural Animation Toolkit

INSYDIUM Fused 2025.4 introduces Jidou, a fresh suite of procedural animation tools that simplifies complex animation setups while keeping them completely customizable.

The five Jidou tools

• jdAniMate: Creates start and end PSR setups with detailed timing control for clones and hierarchies.

• jdDriver: A powerful “drive anything with anything” system perfect for linking parameters, rigs, and procedural setups.

• jdFlowCam: A procedural camera animation tool giving you full control over timing, holds, easing, and path variation.

• jdGeoFlow: Generates procedural animation paths with built-in deforming for organic motion.

• jdGeoRoll: Adds rolling controllers to objects with collision lists and gravity influence.

Jidou is ideal for motion designers and technical artists who want speed, flexibility, and total procedural control.

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How This Update Improves Your Workflow

INSYDIUM Fused 2025.4 doesn’t just add features; it makes simulations faster to iterate, easier to control, and more intuitive to art-direct.

Practical workflow advantages

• Build complex behaviors faster with layered modifiers
• Preview smoke, fire, and volumes directly in the GPU viewport
• Generate stable, detailed liquid sims with modern solvers
• Use foam, bubbles, spray, and crown splashes without manual hacks
• Procedurally animate scenes without traditional rigging overhead
• Achieve higher-quality results while spending less time managing nodes

This release is the most modern, production-ready version of NeXus yet.

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Ready to explore INSYDIUM Fused 2025.4?

If you want faster simulations, better liquid and smoke effects, and more intuitive procedural animation tools, now is the perfect time to dive into the new update.

Explore INSYDIUM Fused 2025.4 and upgrade your workflow today.