Echoes of Iron
Iron Seed has a great tracklist of techno/space rock tunes that really get your brain thinking of the stars. There are several standout tunes, Intro 1, 2 and the Colonization music are really good. What caught my eye is that these tracks are by Andrew Sega, AKA Necros. He composed a major chunk of the soundtrack for Crusader: No Remorse, and the ear-etching song from the first level of that awesome game "Dimension 2021" is actually in this game as well!
These tunes are not as well developed as Crusader's soundtrack, clearly showing Necros at a developmental stage of his music, but are still great space-techno chiptunes that ring in the ears. Give 'em a shot and you won't be disappointed.