I've been using Drivethru for years and I have to say this is the best find I've ever seen here, and it's free!
I'm not one for retrogaming, and I abandoned D&D years ago, however this is has a lovely feel to it and has me aching to Gm it.
The rules are well written, and well thought out, I particularly enjoy the system/planet creation rules and I fully intend to incorporate the faction rules into my games.
I'll certainly be keeping an eye out for other Sine Nomine games based on this RPG.
[5 of 5 Stars!]