History of Doom
Doom is the game that ushered in the popularity of the first-person shooter genre, the source of the gaming subculture and a pioneer of immersive 3D graphics.
The game is a first-person shooter, where the player fights his way through hordes of hellish monsters. It is divided into three nine-level episodes. The goal of each level is to reach the exit. A variety of weapons, power-ups, automap and secret areas are available in the game. It also features two multiplayer modes playable over the network. Online mode was made available later.
The development of Doom started in 1992 when a new 3D engine, the Doom engine, was developed. It allowed the usage of much more realistic 3D graphics than any of the time, dynamic levels and modular data files, which allowed replacing of the game's content, therefore extending the posibilities of the game.
Doom had a huge resonance in the gaming community even before it was released. Coming through with a lot of jokes, rumors, screenshots and leaked alpha versions, the game was released by id Software as shareware in 1993 with an encouragement for the further distribution. It was played by an estimated 10 million people within the first two years of its release, becoming a major problem at the workplaces.
Along with an immense amount of WADs (custom game files), mission packs, additional levels and modifications, Doom franchise was later continued with several more games.