A GURPS Lite Campaign Set in the World of the TV Show Stargate SG-1; Season 6 Edition
From the introduction:
Welcome to the universe of Stargate, where contemporary soldiers and scientists brush shoulders with spacefaring aliens, monstrous parasites, and beautiful damsels in distress.
To survive and prosper, your character will need a fast draw, a fast tongue, quick wits, and a sense of honour. Beware beings who look like gods, especially ones with glowing eyes; the Norse pantheon are OK, but the rest of 'em want to enslave you and steal your planet...
This history is drawn from the movie Stargate and the Stargate SG-1 TV show as far as the season 6.