28. Grim Fandango
Grim Fandango was an attempt by Lucas Arts to drag classic adventure games in to the 3D era, but it was a sales failure and was partly responsible for the decline of the genre. That aside, it's a brilliant game that fans of previous adventure games like Monkey Island should love. You play as Manny Calavera, who is a travel agent for the Department of Death, which determines how people progress to the Ninth Underworld (either a 4 year journey on foot for sinners, or a 4 minute journey on a train for worthy souls). Manny discovers a plot to steal peoples train tickets, thus forcing them to set out on foot, and the game follows his attempts to set things right. It really is a great game, and it's just a shame more people didn't play it.