ProD at work. Almost ready to be updated!
This is the terminal tile set I used as an example.
I borrowed this one from Vicious Orcs. More tile sets here.
Tiny development note here: To get pixel perfect images in Unity, follow this thread. You basically need to change the import settings on your textures to Point. Then you need to set up your camera Orthographic and then set the camera size to half of your game's resolution (Or any power of two for that matter.) It took me some time to get it exactly right. Cheers!