A Game Designer of the name Jason Rohrer has created a game for the last ever 'Game Design Challenge' at GDC in which he wants no-one, not even himself to play it for around 2000 years, to help accomplish this he has hid A Game for Someone in the Nevada desert. He of course has the co-ordinates so could find it if he wanted to, this however is unlikely as his vision is for an AI entity to come across the game many many years from now and play it.
Source: Game designer Jason Rohrer designs a game meant to be played 2,000 years from now, hides it indesert | Polygon