These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Dig
Awesome Music: There is even a soundtrack CD, with the beautiful music of the game composed by Michael Land.
That One Puzzle: The stupid exploding alien turtle skeleton. See the trope page (which provides the image) for full details.
The Rat puzzle is a slightly less infuriating example, except in that case the game barely provides you with any clues as for what you're supposed to do.
Ditto for how to open the tomb of the Cocytan inventor.
