Doom (1993 video game)
Because id planned to self-publish the game, as the game neared completion they had to set up the systems to sell the game. Jay Wilbur, who had been brought on as CEO and sole member of the business team, planned the marketing and distribution of "Doom". He felt that the mainstream press was uninterested in the game, and as id would make the most money off of copies they sold directly to customers—up to 85 percent of the planned US$40 price—he decided to leverage the shareware market as much as possible, buying only a single ad in any gaming magazine. Instead, he reached out directly to software retailers, offering them copies of the first "Doom" episode for free, allowing them to charge any price for it, in order to spur customer interest in buying the full game directly from id.
Doom (franchise)
The "Doom" video games consist of first-person shooters in which the player controls an unnamed space marine also referred to as "Doomguy". The player has to battle the forces of Hell, consisting of demons and the undead. In the games, the player's character will often go back and forth through hell. "Doom II: Hell on Earth" follows after the events in "Doom", the player once again assumes the role of the unnamed space marine. After returning from Hell, the player finds that Earth has also been invaded by the demons, who have killed billions of people.