Earth 2160 Universe Edition 2010 offers all the Earth-parts for oodles hours a PC. It is a very good collection of titles and gives me immense pleasure. I would strongly recommend anyone who likes to play RTS. 10 EUR are more than well spent.
The only drawback is the online activation! I find that senseless at a 10 EUR title but is not so bad.
Now even a cool Jagged Alliance Edition and I'm happy ;-)