It's only fitting that Grim Fandango takes place in the Land of the Dead, because in hindsight it represents something of a eulogy for the declining adventure genre. LucasArts' penultimate adventure game (its swansong was the anticlimactic Escape From Monkey Island) may well be its best. It helped cement director Tim Schafer as something of a superstar, prone to appear on late-night talk shows and host awards ceremonies despite Grim Fandango and his biggest games (Psychonauts, Brutal Legend) being commercial failures. Before we were all swayed by open worlds, 3D combat, and an influx of shooters, Grim Fandango proved that there's still some life left in those dusty bones.
http://www.eurogamer.net/articles/2012-02-05-retrospective-grim-fandango