Atlas Studio vs SimpleXTerrain

Atlas Studio is a free, open-source Roblox Studio plugin for procedural 3D terrain generation through a visual node graph. Its documented library contains 56 nodes for generators, shaping, erosion, materials, and output. The workspace previews height, material, and slope, with an optional 3D mesh view. Paint Mask nodes provide a dockable canvas for local edits. Built-in recipes include Temperate Forest, Rolling Grassland, Rocky Highlands, and Island / Coast. Projects save the graph, bounds, seed, preview resolution, masks, environment settings, and build history with the Roblox place, allowing reuse. Final builds write native terrain in chunks on Roblox’s 4-stud voxel grid and fill empty voxels below the water plane with water. Preview resolution affects interactive previews only. Installation comes from the Roblox Creator Store and opens under Plugins → Atlas → Atlas Studio. Roads, structures, landmarks, models, and vegetation are outside scope, and materials use Roblox’s built-in terrain materials rather than custom textures.

SimpleXTerrain is a free, MIT-licensed addon for procedural terrain generation in Godot 4 .NET using C#. Its node graph editor defines heightmaps, biomes, splatmaps, and scattered instances. Heightmap sources include Perlin, fractal, and Voronoi noise, radial shapes, splines, and images. Modifiers include levels, curves, slope masks, hydraulic and thermal erosion, terraces, beaches, ledges, and blur.

At runtime, the addon evaluates terrain chunks asynchronously on .NET background tasks around a moving camera, then streams heightmaps and control maps into Terrain3D regions. The documented workflow uses a Terrain3D node with a camera or character attached to a terrain streamer to build Godot scenes. Requirements are Godot Engine 4.6 or later in its .NET or Mono edition, .NET SDK 8.0 or later, and the Terrain3D plugin. Setup involves copying the addon into the project’s addons directory, rebuilding the C# solution, and enabling the plugin in Project Settings. Foliage and object scattering can generate placement data, but the feature is experimental. Some GPU-capable work has RenderingDevice compute helpers; the documentation identifies CPU evaluation as the reliable path.