DOOM 3 Level 18: Delta Labs Sector 3 Doom 3 is a sci-fi horror first person shooter developed by id Software and published by Activision. This game was released in August 3, 2004 as a retelling of the original Doom. It was released using John Carmack's new engine dubbed id Tech 4. At the technology released 10 years prior, this is essentially what the game would've looked like. This game was less of a run and gun action and leaned towards sci-fi horror.