Awesome

★ I am not maintaining this and do not know if it works with the latest version of Unity! Feel free to mess with it though ★

UnityTile3D

Simple 3D Tile Editor. Contributions Welcome!

Todo

• Improve Palette / Painting tools, particularily with rotation / flipping
• Add Slopes, or perhaps variations on the kinds of "blocks" you can place
• Look into using Sprites since Unity seems to have a way to split up a texture automatically already
• Separate into multiple meshes as the terrain grows (probably create child gameplay objects?)
• Optimizations (ex. don't rebuild the collision mesh if we're just painting, etc)
• Add Undo / Redo