But now, after 17 years, the ban has been lifted after an appeal from Bethesda Softworks, who now owns Id, original creator of Doom.

FORBES: Germany Lifts Ban on Doom Sales after 17 Years

Legendary videogame designer John Carmack --creator of games like Doom and Quake, and founder of id Software --owns rocket-technology startup Armadillo Aerospace .

FORBES: The New Space Race