Acclaimed Flop: The game was extremely well received and still has a large following, but it was complete flop in terms of sales and it partially convinced LucasArts that adventure games were a bygone genre.
What Could Have Been: In Year 1 at El Marrow, Manny was originally supposed to meet a giant woman wearing a giraffe mask.
In Year 2, Maximino, the one who runs the gambling tracks, was supposed to have a feud with a corrupt boss of the dock workers named Calabeza. This feud would culminate in them arguing in front of Hector LeMans and asking which of them will run Rubacava. Hector's response would have been to kill both of them and reply: "Me". In the final game, Calabeza is absent and Maximino's fate is never revealed.
Working Title: Inverted. Grim Fandango was the code name for The Phantom Menace casting - either a shocking coincidence or a bizarre sense of humor on George Lucas' part, because some actors like Peter Lurie actually thought they were being cast for The Phantom Menace when they came to audition for the game.