Spline Architect is a one-of-a-kind spline tool introducing new ways to work with splines. It consists of a powerful base package and a growing set of optional addons available separately. It works in both 3D and 2D environments.
Spline Architect v2.3.3 (11 May 2026) (Latest version)
Spline Architect v2.2.10 (20 Apr 2026)
Spline Architect v2.2.1 (27 Mar 2026)
Spline Architect v2.1.6 (01 Mar 2026)
Spline Architect v2.1.5 (26 Feb 2026)
Spline Architect v1.5.1 (01 Dec 2025)
Spline Architect v1.3.6 (05 Nov 2025)
Spline Architect v1.3.4 (23 Oct 2025)
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Description
Spline Architect is a one-of-a-kind spline tool introducing new ways to work with splines. It consists of a powerful base package and a growing set of optional addons available separately. It works in both 3D and 2D environments.
Perfect for roads, intersections, curved structures, train tracks, camera paths, character movement, and more.
You can even code your own traffic or train systems using Spline Architect’s API (example scripts included).
???? User manual
???? Documentation
???? Discord
➕ Addons
Terrain Tools – Create mountains, rivers, paths, entire worlds using splines.
Object Cloning – Clone GameObjects or sequences of objects along splines.
???? Deformation
Deform any type of mesh or mesh collider along splines.
Deform prefabs with hierarchies of GameObjects.
Deform LOD groups.
Deform decals (projection decals are not supported).
Apply deformation effects to control points.
Add layered noise effects to your deformations.
Snap deformations to control points or GameObjects.
Export deformations as mesh assets.
???? Splines & Spline connectors
Loop, split, and join splines.
Snap control points to a grid to create perfect loops, 90° or 180° turns.
Connect control points to spline connectors.
Link splines together to create seamless transitions.
Use spline connectors to move splines with other splines.
???? Animation
Animate deformations or any type of GameObject along splines using the Unity Animation System or script your own behavior.
Animate splines using spline connectors or script.
Move objects between linked splines.
Add effects on control point to warp animations.
???? Performance
Multithreaded and uses Unity Burst for optimal performance.
Cached positions and normals for better performance.
View memory usage, length, and other information for each spline.
Build your game without exporting meshes, no performance costs.
Completely strip unwanted components from the final build if needed.
Optimized for low-end mobile devices.
???? API
Fully exposed API for creating splines, segments, deformations, followers, and more during runtime or in the editor.
Code your own traffic or train system (examples included).
Instantiate splines and deformations using premade prefabs.
No DLL files, all code is exposed and editable.
Includes many example scripts to help you get started.
Technical details
Important: If you’re updating from Spline Architect 1.0.6 or earlier, you must delete the SplineArchitect main folder before updating. Also make sure your addons are up to date!
