Spline Architect - Terrain Tools v1.2.4 is an addon for Spline Architect that functions as an extension of Unity's Terrain system. It integrates seamlessly with all built-in terrain features while maintaining a non-destructive workflow, allowing full control over shaping mountains, carving paths, creating rivers, roads, and more—directly using splines. This tool enables the rapid creation of detailed, hand-crafted landscapes with unmatched speed and precision, allowing entire worlds to be built in hours or even minutes.
The package is multithreaded and optimized with Unity Burst for peak performance. It supports multiple terrains, including high-resolution 4K terrains, and allows up to 16 noise layers for terrain deformation, painting, and object spawning.
For terrain deformation, users can set width, blend width, easing, and erosion parameters, customize individual control points with properties such as saddle skew, contrast, rotation, noise strength, and center smoothing, and apply up to eight range fields to deform specific spline segments. Path carving is fully compatible with Unity’s Terrain tools, and non-destructive editing allows changes without permanently altering the terrain. A unique erosion system is included, offering functionality not found in other tools.
In terrain painting, up to 16 layers per spline can be used, with fine control over width, blend width, easing, noise, slope filtering, slope blending, and range. Painting can be masked using GameObject positions and adjusted per control point with width, offset, and blend modifiers. All painting data is stored directly in the spline and works alongside Unity’s native terrain painting system.
For object spawning, any prefab or scene object can be placed along splines with up to 16 instancing layers. Spawning can be controlled via spacing, probability, distance from splines, slope, random rotation, scale, and more, with per-control-point customization for scale, height, and probability.
Homepage: https://assetstore.unity.com/packages/tools/terrain/spline-architect-terrain-tools-324377
2026-03-30 00:00:00-update version:Spline Architect - Terrain Tools v1.2.4
