id Software

It's the exponential progression of these things that bothers me most. Ever since the original Doom, the majority of First Person Shooters (FPS) have followed an incredibly strict formula: The hero begins the game with a ridiculously underpowered weapon, and is besieged by an army of enemies that can be just barely killed by that first weapon (it's challenging enough that each enemy put down feels like something of an accomplishment).

According to ESRB, this game contains: Blood and Gore, Intense Violence

An impressive achievement in audio and visual technology, Doom 3's visceral gameplay is a deliberate throwback to the original Doom from 1993.

Game Description: Doom 3 continues the incredible shooter action of the first two Doom games! The Mars Research Facility has been invaded by demons from Doom, leaving only chaos and horror in their wake. You're one of the only survivors - to stay alive you'll have to fight your way to Hell and back.

I'm pretty much in agreement with Mike on this one. Quake III Arena is fast, violent and addictive—so much so that I found myself glued to the game without a care in the world for what I was doing, where I was or how I got there. I became so addicted to the game that my brain would liquefy and go on auto pilot for hours at a time—totally desensitized to all of the lightening-quick violence and utterly oblivious to the online opponents I was mercilessly fragging.

The Dreamcast port of Quake III has for the most part stayed true to its PC cousin.

According to ESRB, this game contains: Animated Blood and Gore, Animated Violence

Videogames have also been considered another plain old recreational activity, but with the release of the much anticipated online multiplayer first-person shooter (FPS), Quake III: Arena (Q3A), that perception may finally change. The activity of Deathmatching (dueling to the death in cyberspace), which was popularized by FPS games like Q3A, may finally be considered a legitimate sport; digital or otherwise.

According to ESRB, this game contains: Animated Blood & Gore, Animated Violence 

Game Description: This is the highly anticipated next installment in the Quake series of adventure games. Quake 3: Arena continues the action of the earlier two games but adds more intense action, surreal graphics, and a phenomenal multiplayer mode. Three player classes (light, medium, and heavy) with their own strength, speed, and armor levels, together with new characters and weapons (plus old favorites, such as the BFG), make this a thrilling first-person shooter game. The game also features body armor and health kits to help keep you alive. Quake 3 makes for an exhilarating single-player game, but to truly discover what makes this game great, try out the mulitplayer mode for up to 32 players in one-on-one matches or group conquests.