Digger is a simple yet powerful tool to create natural caves and overhangs on your Unity terrains directly from the Unity editor.
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More and more AAA games add gentle overhangs and caves to their environment to make it more realistic, more interesting and more diversified.
A common way to do this is to create 3D models with an external modeling tool, and then place them manually over the terrain and blend them with it. This is tedious, unpractical and inefficient unless you have an army of 3D artists and level designers... and even in that case, you'd probably want them to focus on more valuable work.
This is where Digger comes to action. No more external tool required, no more loss of time, no more headache. It lets you create caves and overhangs on your terrain directly within the scene view, in a few clicks.
It will make you feel like you have a voxel terrain in your hands, without the downsides. It actually keeps the new, fast and reliable Unity's terrain system and creates seamless cave/overhangs meshes just where you need.
Internally, Digger uses voxels and Marching Cubes to create meshes, but instead of replacing the entire terrain with a voxel terrain, it creates a mix of them and gives you the best of both worlds.