I also know this game as the Crystal Key. It was an OK game. You do a lot of running around between Worlds. Not too much puzzles to work out and they were not too difficult once you found them. I reffered to a walkthrough once as I ran around for hours and couldn't find anything to do. The walkthrough had the answer and it was one of those things I don't think anyone would find by themselves - ever! One thing I found very irratating was that apart from needing the discs to play you have to put in disc 1 then 2 then 1 then 2 etc. as you jump between worlds. Gets tedious. You won't waste money playing this game although there are better out there. Check my other basic reviews if you like for a few of them. Look for 4 Star or better. Hope this helps... :)

Another good game produced by The Adventure Company.
Released in America as Crystal Key 2, it is even better than Crystal Key which had to be purchased from America. Good balance of puzzles and dialogue, interesting new ways of travel between locations. I have to admit that a couple of puzzles needed hints from the internet or I would have been completely stuck. Necessary to make notes and record codes that you come across as you play the game for future locations. Character voices good.
Overall a good adventure game with an interesting story and good graphics.