Hi, PurpleGaga27!
Yes, you are right - when we were creating Mars 2000 setting, we were inspired by a Dune RTS game, but that's all that connects us with Dune universe.
And here is the answers:
1) We are using Unity 3d engine
2) We have made it: http://www.indiedb.com/games/mars-2000
Thanks for your attention to our project.