How to Play Doom
In Doom, players take on the role of an unnamed space marine, fighting his way through hordes of invading demons from Hell. Doom was played by an estimated 20 million gamers within two years of its release, popularizing the mode of gameplay and spawning a gaming subculture. This iconic arcade game pioneered immersive 3D graphics, networked multiplayer gaming, and support for customized additions and modifications. Doom had an effect on the gaming industry, first-person shooter games boomed in the 1990s. It was helped in no small part by the Doom's release. The graphic violence, as well as satanic imagery, made the game the subject of much controversy. The franchise was followed up by Doom II: Hell on Earth (1994) , Master Levels for Doom II (1995), and Final Doom (1996). Originally released for PC DOS, the games were later ported to a number of other platforms. Doom's source code was released in 1997. This spawned even more adaptations, due to fans porting the code to an array of other devices. The games technology engine was surpassed in the mid-90s, and the popularity of the game tailed off. However, the franchise again received popular attention in 2004 with the release of Doom 3.