This is my Creep Den design made for the Riot Art Contest. Made from 2.5D Geo. It uses alpha to create really high fidelity, painting like models, while still retaining the depth and gameplay of full 3D models. This technique only works with fixed orientation cameras.
The Contest was two part. To create a Creep Den and Turret. The turret is full 3d, sculpted in Zbrush. I used alpha for the plants and scroll.