Yes, like Brandon said, I was asking only about CD-ROM games. I don’t think the CD version of KQ5 retained the copy protection, because it wasn’t integrated in the game like it was in KQ6 and Freddy Pharkas. About QFG4 I’m not sure, because while it was more integrated than KQ5, it wasn’t as integrated as in KQ6. As for SQ6, I don’t know… some say it’s copy protection, others say it’s a badly designed puzzle (because some copies were distributed without a manual). If it’s indeed copy-protection, I suspect that SQ6 is the only CD-only Sierra adventure that have manual-check copy protection. No one knows of other games?