Z.E.U.S for Unity Splines

⚡ Z.E.U.S – Zero Effort Utility Splines for Unity Splines

Command your curves with the speed of light.

Z.E.U.S is a powerful editor extension for Unity Splines built for speed, clarity, and complete control. Designed from the ground up for intuitive workflows, Z.E.U.S. makes spline-based content creation in Unity faster and more enjoyable, whether you're crafting roads, tracks, trails, ropes, roots, rivers, or anything in between using Unity Splines.

✅ Key Features

⚡ Manual & Automatic Snapping

Snap knots, tangents, and rotations to terrain or any collider surface with one click using shortcuts (e.g. Ctrl + Shift) or enable Auto modes to snap live as you edit.

⚡ Draw New Points

Hold Ctrl and left-click to extend from a selected knot. Supports Auto, Linear, and Bezier modes for quick, intuitive spline creation.

⚡ Advanced Alignment Tools

Align tangents and rotations with precision using various alignment modes. Includes shortcut support and Auto mode functionality.

⚡ Smoothing Tools

Smooth tangents with adjustable strength and choose from multiple smoothing modes to match your workflow.

⚡ Complexity Management

Simplify splines using angle thresholds with live previews. Double spline point density and auto-smooth tangents using several smart smoothing strategies.

⚡ Adapt & Basic Cloning (Non Resampled)

Generate clones of full splines or selected segments in any direction using an intuitive XY pad. Great for parallel roads, fences, or tracks.

⚡ Smart Clone (Resampled)

Clone complex spline shapes across long distances with fold-resistant results. Ideal for tight corners and complex interiors & exteriors that typically fail with basic offset techniques.

⚡ Recursive Smart Clone (Resampled)

Smart Clone recursively in all directions, covering large areas with splines that accurately follow the shape of the source spline. Great for scattering content fast.

⚡ Full Editor Integration

Visual previews, one-click undo, and real-time SceneView feedback. Z.E.U.S. blends seamlessly into your workflow.

⚡ Custom Rotation & Alignment Modes

Control how knots orient—follow tangents, face the next knot, align to surface normals, and more.

⚡ Selection-Aware Editing

All actions can target either your selected knots or the entire spline—ideal for focused, precise editing. Wrap-around closed-loop selections work as expected.

⚡ Multi-Spline Support

Work across multiple splines on the same Unity Splines component with full tool compatibility.

⚡ Helpful Tooltips

Every function includes contextual tooltips to keep you informed and moving quickly.

⚡ Great Performance

Z.E.U.S. is built for speed—edit large or complex splines without issue. This is the first release. Burst optimisation is on the roadmap.

⚡ Editor Serialization

All settings are serialized with your scene. Nothing is lost, even across sessions.

⚡ One-Click Setup

Just install—Z.E.U.S automatically integrates into Unity’s Splines workflow. No configuration needed.

⚡ Compatibility

Fully compatible with the Unity Splines Components: Spline Animate, Spline Instantiate, Spline Extrude & Spline Mesher.

⚡ Copy Components

When cloning Splines, there is an option to copy the source Splines Components, making it easy to preview content connected to the Splines. If a Spline Instantiate is present, it will randomise the copies for you.

⚡ Pack & Unpack Helpers

Easily pack all child or cloned splines into the parent’s spline list—and unpack them back when needed.

🔧 Technical Details

Z.E.U.S. is laser-focused on spline authoring. No bloat. No lag. Just the streamlined, intuitive spline editor Unity should have shipped with a compact UI, essential tools, and effortless power. ⚡

• Requires Unity 2022.3.59f1+ (Tested with Unity 6+)
• Compatible with all platforms
• Editor-only (no runtime components required)
• Includes a simple demo scene
• Native integration with the Unity Splines package
• Lightweight, modular C# architecture
• Full Undo/Redo support
• Optimised for top-down workflows on terrain and ground surfaces (also snaps to mesh geometry)
• Shortcuts are included for important features.
• Documentation included

💬 Support & Feedback

We're actively developing Z.E.U.S. and would love to hear your thoughts! Your feedback helps shape the future of Z.E.U.S. into the ultimate spline solution.

Encounter an issue or have a suggestion? Join us on Discord — we’re here to help!

💬 Future Modules

Z.E.U.S is the first in a series of assets focused on working with splines. In the near future, additional modules will be released, each targeting specific aspects of spline workflows. The first of these will be a Conversion Module—a free add-on that enables conversion between third-party spline systems.