Because of the way games are structured, particularly old school games, they lend themselves to recalling intimate spatial details. This observation has led Josh Millard to found Mapstalgia for people to recreate maps from memory of various videogames.

“It occurred to me that there’s millions of people walking around with potent memories of common fictional game worlds. I asked a few friends to draw some maps, started up a simple blog for it, and here we are,” described Millard. “I was banking on a few dozen [submissions] by the end of the first month. Instead, I’ve received more than three hundred so far and they’re still coming in. Folks [realize] this is not just neat to look at, but something they can actively participate in. Total light switch moment: ‘Oh, hey, wow, I bet I could do a map of Mario/Zelda/Doom/Zork…'”

 

Source: Mashable.com