Nah, gotta disagree here. A lot of the Sierra games were not hard, they were just stupidly annoying. Hard, to me, means if you work at it and get better (I'll include both increasing player skill and character skill here) you can succeed. The King's Quest games, on the other hand, had a bunch of cases where if you missed something (including, in some cases, things that were never or barely hinted at) or if the RNG didn't like you (screw you, Dwarf, you thieving bastard) you'd softlock the game but not realize it for hours. That's not difficulty, that's just trolling.