DOOM, id's brilliant sequel to Wolfenstein 3D and a game you are most probably aware of, defined the modern FPS and singlehandedly changed the games industry. Also, it's a PC game that's highly collectible and thus worth owning. Even more so in its 1993 original, mail order, complete in box version that includes the 5.25" inch disks of the registered version, manual, addendum and id postcard.
It's said rare and amazing version of the game that you can grab via this DOOM CIB Lot eBay auction. Bid on it and you'll also be bidding on a complete, boxed version of DOOM II: Hell on Earth, a shareware version of Wolfenstein 3D and 1000 of DOOM/DOOM 2 levels. And an interesting little extra too.
Seller ships to the Americas, Europe, Japan, Australia, China and South Korea.