Open Arena is a Quake 3 style First Person Shooter built on the GPL licensed Open Source Quake 3 engine. It's a stand alone game, so you don't need Quake 3 Arena to play it. Just like Quake 3 Arena, it's a full on, 3d FPS done in the traditional deathmatch style.

Quake Live is a First Person Shooter game, very similar to many other Quake-based variants, an extremely popular and successful franchise of games developed by id Software. In fact, many Linux First Person Shooters are based on a variety of game engines, released as open-source by the company.

If you’re reading this, there’s a good chance you grew up with classic video game consoles like the NES and Sega Genesis. For years Windows users have been enjoying high quality game emulation software, but many of the Linux options have been buggy or incomplete. It’s time to take a look at where things stand when it comes to playing console games in Linux.

OpenArena is a FPS game intended to be a free replacement for the proprietary Quake III Arena. Both the media and the game are licensed under the GPLv2.[1][2] The latest version of the game is version 0.8.1 released on October 31th, 2008.[3] The OpenArena project was established on August 19, 2005, the day after the id Tech 3 GPL source code release.

Guake - Quake-style terminal for GNOME
A Quake-style terminal is a drop-down terminal which can be shown/hidden just like the console in Quake (and most of the first-person shooter games out there), using the press of a key (~ in Quake). Guake is a terminal application written in GTK which uses the F12 keyboard shortcut by default to show or hide it.

I know some of you can't get enough of those classic games, so after showing you how to play Super Nintedo (SNES) games on Ubuntu Linux using an emulator, I will be giving instructions on how you will be able to run DOS games on it.

"More than 500 people were killed when Peru was hit with by an enormous earthquake last week. When we learned that Richard Stallman, founder of the Free Software Foundation and author of the GPL under which the GNU/Linux operating system is licensed, was in Peru during the quake, we asked if he would share his experiences with us. Here's his report..."

Yakuake is a Quake-like terminal, which means it behaves just like any console in Quake or usual first-person shooter games. It supports global keybindings and can be invoked with F12 and hided with the same keyboard shortcut when you finished your job with it. This way it will run in background but it won't eat your taskbar or system tray space.

Yesterday id Software pushed out an updated point release for Quake 4 on Linux.