This was a good game when I first played it back in the day it came out. GOG has made it a HASSLE and agro to play, since they do NOT put the KEYS in the opening pages. SOOO, you have to download the manual, then search the pages for words, etc, and put those into the passwords to play the game, THEN there are glitches from the original game plus those put in by GOG or some idiot programmer. This FUN game has been rendered a very aggravating hassle due to these "security" requirements. It was/is a waste of coin to down load the series, since ONLY the last two games are readily playable. KQ*, a different format, will run under W-7, and backward compatible, BUT, the glitches in the codex make it a real pain in the butt. I have the original games on disk, but DL these from GOG due to their claim that they are playable on W-7/64 bit rig. That MAY be but not so on my Alien ware chamber pot. This is a RIP OFF, IMHO. Based on 30 years of game playing.