Information:  - Doom II : Hell on Earth is a first - person shooter video game , the second title of id Software 's Doom franchise . It was originally released for MS - DOS computers in 1994 and Macintosh computers in 1995 . Unlike Doom , which was initially only available through shareware and mail order , Doom II was a commercial release sold in stores . Master Levels for Doom II , an expansion pack that includes 21 new levels , was released on December 26 , 1995 by id Software . Due to its success and popularity , Doom II was later released for the Game Boy Advance in 2002 , the Tapwave Zodiac in 2004 , and on Xbox Live Arcade in 2010 . The release of the original Doom source code has facilitated ports to many other platforms , including the Apple iPhone and several other types of cellphones . On August 13 , during the QuakeCon 2009 media conference , it was announced that Doom II would be ported to Xbox Live Arcade , and was released in May the following year .  - Alfonso John Romero (born October 28, 1967) is an American director, designer, programmer, and developer in the video game industry. He is best known as a co-founder of id Software and designer for many of their games, including "Wolfenstein 3D", "Dangerous Dave", "", "Doom" and "Quake". His game designs and development tools, along with new programming techniques created and implemented by id Software's lead programmer John D. Carmack, led to a mass popularization of the first person shooter, or FPS, in the 1990s. He is credited with coining the FPS multiplayer term "deathmatch".  - Adrian Carmack (born May 5, 1969) is one of the four founders of id Software, along with Tom Hall, John Romero, and John Carmack (no relation). He had worked there as an artist. He was a major stock owner of id Software until he left the company.  - id Software LLC (formerly id Software, Inc., ; see Company name) is an American video game developer headquartered in Dallas, Texas. The company was founded on February 1, 1991, by four members of the computer company Softdisk, programmers John Carmack and John Romero, game designer Tom Hall, and artist Adrian Carmack (no relation to John Carmack). Business manager Jay Wilbur was also involved.    What object entity has the relation of 'programmer' with the subject 'doom ii: hell on earth'?   Choices: - john carmack  - john romero
john carmack