Thanks! It does definitely turn the typical tower defense strategies on their head.
As for the style, I'm sure there are tons of ways to accomplish it. What I did was make the models in Blender and I used the inset feature to add rims around each face. Then I used vertex painting to set the faces to black and the rims to white. Then in Unity, I created a shader to use the vertex color along with a property color as the emission color. There is also a post processing volume with a high intensity bloom filter applied.