Sure, the Indiana Jones and the Last Crusade graphic adventure has been available from Steam since forever, but I know you kids love things that are DRM-free, so consider yourselves accommodated. And just like the Steam version, you get the unabridged Grail Diary in all its .pdf glory.
There was a time when GOG was releasing LEC games more regularly, then that all stopped, and if you think that wasn't the consequence of a sinister, labyrinthine conspiracy, get a clue. But does the unceremonious appearance of Last Crusade signal that the seal has been broken again? We still need Monkey Island 3 and 4 up there, bare minimum.