Doom (video game series)
Doom (Officially spelled "DOOM") (ESRB ratings: M and T) is a first-person shooting violent video game series, it was created by id software and is one of the most well known of its genre due to its innovative graphics and gameplay. It is widely regarded by critics as the most important game in the first person shooter genre. It features vast amounts of violence, blood, demonic imagery and gore. It has also been accused of causing the events at Columbine High School and it has been claimed that one of the shooters practiced for the event by creating Doom levels resembling the halls of the school with monsters to represent classmates and teachers. However, while Eric Harris did make custom maps for Doom, the "Columbine levels" are usually dismissed as just a coincidental myth as regarded widely.
There are three games in the series as well as a series of expansion packs.