Best First Person Shooter Game For Linux?

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Hey guys, FPS Games on windows are very common. Well the FPS games on linux are not uncommon but still we have a space to fill up. Which is the best FPS game on linux that you like? Do vote guys...

AssaultCube, formerly ActionCube, is a free first-person-shooter based on the game Cube. Set in a realistic looking environment, as far as that´s possible with this engine, while gameplay stays fast and arcade. This game is all about team oriented multiplayer fun.

Cube is an open source multiplayer and singleplayer first person shooter game built on an entirely new and very unconventional engine. Cube is a landscape-style engine that pretends to be an indoor FPS engine, which combines very high precision dynamic occlusion culling with a form of geometric mipmapping on the whole world for dynamic LOD for configurable fps & graphic detail on most machines. Uses OpenGL & SDL.

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Aleph One is a game engine currently in development by the Open Source community. It is based on the source code of Marathon 2: Durandal, a game created by Bungie Software in 1995. Since Bungie released the source code, Aleph One has matured to include a variety of new features and improvements.

Nexuiz is a 3d deathmatch game that has been in development since the summer of 2002. The goal of the project is to create a high quality first person shooter that can be played freely across all platforms in one package: PC, Mac, and can be even included in Linux distributions. The game is entirely open source, with the sources of the engine, gamecode, map files, and compiling tools, all included with the download, all under the GPL license.

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OpenArena is a Free Open content package for the id tech3 GPL source code package. But why is it a game? Well you see one of the great side effects of making content for a bunch of source code out there is that it becomes a playable game itself. This opens more opportunity for FUN to the end user because they have another option to play a game that you couldn't play without the data because now there is data made for it. And since this data created is also FREE, it's very redistributable. Meaning more people can play it with little effort on obtaining it. This is A Good Thing. The gameplay is identical to the game it's based on so fans of that other game should feel at home here. We do not intend to change the physics of the game. If you feel there is a change of physics of input smoothness, you can blame the ioquake3 team, not us; we just make MD3s and TGAs, compile the code and put it out there.

Tremulous is a free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. Players on both teams are able to build working structures in-game like an RTS. These structures provide many functions, the most important being spawning. The designated builders must ensure there are spawn structures or other players will not be able to rejoin the game after death. Other structures provide automated base defense (to some degree), healing functions and much more...

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Warsow : Set in a futuristic cartoon-like world where rocketlauncher-wielding pigs and lasergun-carrying cyberpunks roam the streets, Warsow is a completely free fast-paced first-person shooter (FPS) for Windows, Linux and Mac OS X.

Cube 2: Sauerbraten is a free multiplayer/singleplayer first person shooter, built as a major redesign of the Cube FPS. Much like the original Cube, the aim of this game is not necessarily to produce the most features & eyecandy possible, but rather to allow map/geometry editing to be done dynamically in-game, to create fun gameplay and an elegant engine. The engine supporting the game is entirely original in code & design, and its code is Open Source