I think a great starting point if you want to know more about good and bad puzzle design is Ron Gilbert's article "Why adventure games suck" , which he wrote back in 1989 when he was designing The Secret of Monkey Island. As pointed out in the previous post, the Monkey Island games had a few cryptic …

The problem is that the game tries to set the pitch bend range using an RPN midi message, which I don't think was defined by the midi-standard at the time of the MT-32 (old). It is supported by the CM-32L and later devices though, and possibly on the MT-32 (new) as well. On the MT-32 (old) the pitch …