Here are several old designs / prototype of the FPS -RTS UI that I worked on during the early development of the game. Couldn't find them all but there were many variants before we come to the final design . Had to experiment and make allot of changes throughout the development.
I'm glad that the final one for the game came out really awesome. Thanks to my Tech Artist, Vincent and Concept Artist, Zeren , we manage to pull off what I personally think is one of the most interesting UI for an FPS-RTS game.
Also Thanks to Shaman Teh for the assist and technical implementation of the early designs.