Gun Strike Blood Killer 3D is a first-person shooter video game developed and published by xyz. The game is set in a post-apocalyptic world where the player takes on the role of a mercenary fighting against the undead in the hopes of saving humanity. Players have access to a variety of weapons, such as assault rifles, shotguns, and sniper rifles. The game also features a cover system and an AI system that makes it easier for the player to take down their enemies. The game also features several mini-games in which players can compete against each other. The game also features several missions in which the player must complete in order to progress. Gun Strike Blood Killer 3D is designed for mobile devices, and is available for iOS and Android.
Discontinued No more updates since January 2013: http://sauerbraten.org/. 2013, like Alien Arena, warned discontinued.
Discontinued The last update was published on September 6, 2013.
Discontinued Nexuiz is no longer developed. Its successor is https://alternativeapp.info/software/xonotic/, but the latest version of Nexuiz Classic, 2.5.2, released in 2009, can still be downloaded from the official website.
Unreal Tournament
Counter-Strike
AssaultCube
Cube 2: Sauerbraten
Urban Terror
Call of Duty
Wolfenstein
Arma
Alien Arena
Enemy Territory: Legacy
Squad Game
Digital Paint: Paintball 2
Painkiller
Uebergame
Tom Clancy's Ghost Recon
Blacklight Retribution
Nexuiz Classic
AssaultCube Reloaded
TrueCombat: Elite & CQB
Insurgency
Discontinued No further updates since November 2013: http://assault.cubers.net/ (like Alien Arena, also noted to be discontinued).