I played it on release date for Amstrad 464 CPC. I may have been 11 or 12 yo. Still have the box and the tape.
It was the first game that prompted me to draw maps and write down codes to be able to progress. All the teleport system gave me a feeling of none linearity that deeply shacked my thought process. It is indeed a fond memory, and of the probably hundreds of games I played since then, it remains one of the keystones of my gaming memories.