Firstly I have to say that this is clearly a personal project of the creators/musicians. This is not a mass market product or something you're going to expect to fly off the shelf and is clearly done out of a love of the 2000AD comics and having too much time on your hands when you've made money doing other things. Kudos for giving it a go.
This soundtrack to Mega-City One is all done on old synthesizers, or perhaps new synths made to sound old. It sounds alot like the Terminator soundtrack in terms of musical sytle, though not in themes.
Mega-City One to me is a multicultural melting pot, it's everything and everybody crammed together due to necesity, nobody would choose to live there is there was a better altnerative and this music is so, well, bland and unemotional in places I don't get the same vibe listening to it as, say, the Deus Ex Soundtrack or Vangelis' Blade Runner soundtrack, both music written to evoke a similar setting.
That isn't to say that what is here isn't terrible or badly done, if you like music that sounds like an old Amiga game, look no further. There are highlights when the music steps up a gear, but it never becomes personal nor epic.
Certainly will divide opinion this one and I don't regret buying it, if only to support a creative idea and see where somebody would go with this type of music, it's not what I would've done...but then, I'm not a musician nor do I have this much time on my hand :-)