iCube’s SplineLand is a handy tool for 3ds Max, as it allows easy creation of splines into intricate 3D terrains. The plugin has excellent features such as accurate terrain generation, flexible spline input, and advanced detail management for terrain features like roads.

MultiScatter is a 3ds Max plugin that allows a highly effective way to populate environments with many objects spread throughout the scene. It supports almost all renderers, improves memory consumption, and provides advanced features such as real-time object previews and editing, essential for creating rich environments.