list of freeware first-person shooters
Table:
Title

Developer

Release date

Last update

Operating system

Engine

License

Notes

Action Quake 2

The Action Team

1998

2003

Linux, Windows

id Tech 2

Freeware

Team and Deathmatch based very fast FPS

AssaultCube

Rabid Viper

2006

2010

Linux, Mac OS, Windows

Cube Engine

zlib License

Realistic environments, fast arcade game play, many game modes. Single/Multiplayer.

Black Shades

Wolfire games

2001

Linux, OS X, Windows, Mac OS, iOS

Wolfire Games

Freeware

Free First-person shooter

BZFlag

Chris Schoeneman, Tim Riker

1993

2011-07-03 (2.4.0)

Linux, BSD, OS X, Windows, other UNIX

GNU LGPL

Tank combat.

Chub Gam 3D: Director's Cut

ChubGamSoft

1998

MS-DOS

Pie in the Sky

Freeware

Surreal horror single player game.

CodeRED: Alien Arena

COR Entertainment, LLC

2004–11

2011-12-29 (7.53)

Linux, BSD, OS X, Windows

CRX Engine

GNU GPL (code), Proprietary license (media)

Science fiction, with single or multiplayer modes.

CrossFire

Z8Games

2006

2011-12-15

Windows

Lithtech Jupiter

Freeware

Modern team based shooter. Lots of game modes.

Cube

Wouter van Oortmerssen

2001

2005-08-29

Linux, BSD, Mac OS, Windows

Cube engine

zlib License

Quake style multiplayer deathmatch. Single/Multiplayer.

Cube 2: Sauerbraten

Wouter van Oortmerssen

2004

2010-07-19

Linux, BSD, OS X, Windows

Cube engine

zlib License (code), Individual licenses (media)

Quake style deathmatch, includes built in level editor. Single/Multiplayer.

F.E.A.R. Combat

Monolith Productions, Vivendi Universal

2005-10-17

Windows

Lithtech: Jupiter EX

Proprietary license

Stand-alone multiplayer component of the popular game F.E.A.R. Available here.

Fallen Empire: Legions

GarageGames, InstantAction

2009-06-30

2013-06-27

Windows

Torque Game Engine

Proprietary license

First-Person Shooter with Jetpacks, Multiplayer, CTF, Deathmatch

Freedoom

Freedoom project

2011-01-22 (0.7)

Linux, OS X, Windows, Android, Mac OS, MS-DOS, others

Doom engine

GNU GPL (code), BSD (media)

A Doom WAD file intended to be used instead of the copyrighted file from the original Doom and Doom II.

The Glorious Mission

Giant Interactive Group

2013-06-20

Windows

Proprietary license

Online multiplayer. Developed with the People's Liberation Army of China for use as a recruitment and training tool.

Gore: Special Edition

4D Rulers

2008-07-04

Windows

AMP engine

Proprietary license

Hidden & Dangerous

Illusion Softworks, Take-Two Interactive

1999-07-29

2001-11

Windows

Insanity Engine

Proprietary license

Released free to promote its sequel, Hidden & Dangerous 2. Single/Multiplayer.

.kkrieger

.theprodukkt

2004

Windows

Proprietary license

Won first place in the 96k game competition at Breakpoint in April 2004.

Kuma\War

Kuma Reality Games

2004

2006-07

Windows

Source engine

Proprietary license

Tactical episodic shooter. Single/Multiplayer.

Marathon

Bungie Studios

1994-12-21

2007

Mac OS (original), ported to Linux, OS X and Windows via AlephOne

Aleph One

GNU GPL (code)

Released as freeware and source code.

Mission Against Terror

Kingsoft Dalian JingCai Studio, Wicked Interactive / Suba Games

2010-09-10 (Beta)

2012

Windows

Proprietary license

Free-to-play online fps, developed by KingSoft, published by Wicked Interactive / Suba Games.

Nexuiz

Alientrap

2005-05-31

2009-10-01 (2.5.2)

Linux, OS X (10.4 or later), Windows

DarkPlaces Quake engine

GNU GPL

Unreal Tournament style deathmatch. Single/Multiplayer.

OpenArena

OpenArena team

2005-08-19

2012-02-20 (0.8.8)

Linux, OS X, Windows

ioquake3 id Tech 3

GNU GPL

Free software content remake of Quake III Arena. Single/Multiplayer

Point Blank

Zepetto, NCSOFT

2008-03

Windows

N/A

Proprietary license

Free FPS created by Zepetto in 2009. Close Beta version.

Postal²

Running With Scissors

2003-04-13

Linux, OS X, Windows

Unreal Engine 2

Proprietary license

The multiplayer component of commercial game Postal2STP.

Purge

Freeform Interactive

2003-04-15

Windows

Lithtech: Talon engine

Proprietary license

RPG hybrid where you can level up and increase stats by earning experience points.

Quake Live

id software

2010-08-06

Linux, OS X, Windows

id Tech 3

Proprietary license

A free web based version of Quake III Arena, playable in full screen mode..

Red Eclipse

Red Eclipse Team

2011-03-15

2013-03-22 (1.4)

Linux, Windows, OS X

Cube Engine

zlib License, Individual licenses (media)

A free/open source FPS with fast paced gameplay and agile movement. The development team is very open to community suggestions.

S.T.A.L.K.E.R. build 1935

GSC Game World

2009-02

Windows

xrCore build 1935

Proprietary license

2004 Alpha build of S.T.A.L.K.E.R.: Shadow of Chernobyl. Contains content and features cut from the final release. Has a number of bugs but contains a full, playable single player campaign.

Savage: The Battle for Newerth

S2 Games

2003-09-09

Linux, OS X (commercial), Windows

Silverback Engine

Proprietary license

Hybrid FPS/RTS with both ranged and melee combat

Savage 2: A Tortured Soul

S2 Games

2008-01-16

Linux, OS X, Windows (commercial)

K2 Engine

Proprietary license

The sequel to the award-winning game, Savage: The Battle for Newerth.

Smokin' Guns

Smokin' Guns Productions and Iron Claw Interactive

2009-01-01

2012-06-08

Linux, BSD, OS X, Windows, others

ioquake3 id Tech 3

GNU GPL (code/some media) Proprietary license (some media)

Western Quake-like FPS. Single (with bots)/Multiplayer.

Starsiege: Tribes

Dynamix, Sierra Entertainment

2004 (free release)

Windows

Darkstar engine

Proprietary license

Futuristic team based combat, released for free to promote Tribes: Vengeance. Multiplayer only.

The DinoHunters

Kuma Games

2006-04-24

Windows

Source engine

Proprietary license

Also a machinima series. Single/Multiplayer.

Tremulous

Dark Legion Development

2006-03-31

2009-12-04 (preview release)

Linux, OS X (unofficial), Windows

ioquake3 id Tech 3

GNU GPL

Aliens vs Humans multiplayer team combat with some RTS elements.

Tribes 2

Dynamix, Sierra Entertainment

2004 (free release)

Windows

Torque Game Engine

Proprietary License

Futuristic team based combat, released for free to promote Tribes: Vengeance. Single/Multiplayer.

UberStrike

Cmune

2010-09-17

OS X, Windows

Unity3D

Proprietary license

Free-to-play "social shooter" on Facebook, MySpace and Apple's Dashboard Widgets.

Urban Terror

Silicon Ice Development / Frozen Sand

2000-08-05 (Beta 1.0)

2012-11-09 (4.2.006)

Linux, OS X, Windows

ioquake3 id Tech 3

GNU GPL (ioquake3 engine), Proprietary license (mod code, media)

Originally a Quake 3 mod, now a standalone game.

Warmonger: Operation Downtown Destruction

NetDevil

2007-11-28

2009-08-27

Windows

Unreal Engine 3

GNU GPL (code), Proprietary license (media)

High-end Free-to-play first person shooter with destructible environments..

Warsow

Warsow team

2005-06-08

2012-07-28 (1.0)

Linux, OS X, Windows

Qfusion id Tech 2

GNU GPL (code), Proprietary license (media)

Quake style deathmatch focussed on high-paced action and trickjumps.

Wolfenstein: Enemy Territory

Activision, id Software, Splash Damage

2003-05-29

Linux, OS X, Windows

id Tech 3

GNU GPL (code), Proprietary license (media)

Intended expansion pack turned freeware. WW2 multiplayer team combat

World of Padman

Padworld Entertainment

2007-04-01

2011-07-16 (1.5.4 beta Windows/Linux), 2011-01-24 (1.5.1 OS X)

Linux, OS X, Windows

ioquake3 id Tech 3

GNU GPL (code), Proprietary license (media)

A free Quake 3 like comical FPS game

Xonotic

Team Xonotic

2010-12-23

2013-06-08 (0.7)

Linux, OS X, Windows

DarkPlaces Quake engine

GNU GPL

Fork and direct successor of the Nexuiz Project.

Given the table in the article 'list of freeware first-person shooters' in the '' section, choose the correct relation between the two highlighted columns of the table from the following candidates: basketball.basketball_player.player_statistics-basketball.basketball_player_stats.team, olympics.olympic_athlete.medals_won-olympics.olympic_medal_honor.country, cvg.computer_videogame.publisher, olympics.olympic_participating_country.athletes-olympics.olympic_athlete_affiliation.athlete, people.person.spouse_s-people.marriage.spouse, government.political_district.representatives-government.government_position_held.office_holder, people.deceased_person.place_of_death, base.schemastaging.organization_extra.phone_number-base.schemastaging.phone_sandbox.service_location, time.event.locations, sports.sports_facility.home_venue_for-sports.team_venue_relationship.team, government.governmental_jurisdiction.governing_officials-government.government_position_held.office_holder, book.written_work.author, film.film.genre, base.wikipedia_infobox.video_game.platforms, organization.organization.headquarters-location.mailing_address.state_province_region, award.award_ceremony.awards_presented-award.award_honor.honored_for, base.aareas.schema.administrative_area.administrative_parent, meteorology.tropical_cyclone.tropical_cyclone_season, people.person.places_lived-people.place_lived.location, olympics.olympic_athlete.medals_won-olympics.olympic_medal_honor.event, award.award_category.winners-award.award_honor.award_winner, tv.tv_program.original_network-tv.tv_network_duration.network, soccer.football_team.player_statistics-soccer.football_player_stats.player, cvg.computer_videogame.developer, organization.organization.headquarters-location.mailing_address.country, olympics.olympic_event_competition.medalists-olympics.olympic_medal_honor.medalist, people.person.parents, sports.sports_team.venue-sports.team_venue_relationship.venue, film.film.release_date_s-film.film_regional_release_date.film_release_region, film.film.production_companies, location.location.contains, film.director.film, award.award_ceremony.nominees-award.award_nomination.award_nominee, sports.sports_league_season.league, sports.sports_league.teams-sports.sports_league_participation.team, olympics.olympic_participating_country.medals_won-olympics.olympic_medal_honor.medalist, ice_hockey.hockey_player.hockey_position, location.country.languages_spoken, location.administrative_division.country, film.actor.film-film.performance.character, people.person.education-education.education.institution, sports.sports_position.players-sports.sports_team_roster.player, base.culturalevent.event.entity_involved, sports.sports_championship_event.champion, tv.tv_program.country_of_origin, soccer.football_player.position_s, location.country.official_language, award.award_ceremony.nominees-award.award_nomination.nominated_for, military.military_person.service-military.military_service.military_force, film.actor.film-film.performance.film, military.military_combatant.military_conflicts-military.military_combatant_group.combatants, aviation.airport.serves, location.location.street_address-location.mailing_address.citytown, award.award_nominated_work.award_nominations-award.award_nomination.ceremony, music.composer.compositions, tv.tv_character.appeared_in_tv_program-tv.regular_tv_appearance.actor, award.award_nominee.award_nominations-award.award_nomination.nominated_f, music.album.artist, sports.pro_athlete.teams-sports.sports_team_roster.position, government.politician.government_positions_held-government.government_position_held.district_represented, people.person.nationality, location.hud_county_place.county, film.film_character.portrayed_in_films-film.performance.actor, baseball.baseball_player.batting_stats-baseball.batting_statistics.team, film.film.directed_by, location.country.capital, film.film.music, sports.pro_athlete.teams-sports.sports_team_roster.team, award.award_nominated_work.award_nominations-award.award_nomination.award_nominee, american_football.football_player.games-american_football.player_game_statistics.team, award.award_category.category_of, broadcast.broadcast.area_served, soccer.football_player.statistics-soccer.football_player_stats.team, sports.sports_award_winner.awards-sports.sports_award.team, baseball.baseball_player.position_s, base.schemastaging.athlete_extra.salary-base.schemastaging.athlete_salary.team, film.film.produced_by, olympics.olympic_athlete.country-olympics.olympic_athlete_affiliation.country, sports.sports_team.sport, sports.sports_position.players-sports.sports_team_roster.position, music.artist.album, sports.sports_team.league-sports.sports_league_participation.from, location.capital_of_administrative_division.capital_of-location.administrative_division_capital_relationship.administrative_division, tv.tv_actor.starring_roles-tv.regular_tv_appearance.character, sports.sports_team.league-sports.sports_league_participation.league, base.biblioness.bibs_location.country, aviation.airline.hubs, time.event.instance_of_recurring_event, american_football.football_player.position_s, film.film.country, baseball.baseball_team.league, tv.tv_network.programs-tv.tv_network_duration.program, award.award_winning_work.awards_won-award.award_honor.award_winner, award.award_ceremony.awards_presented-award.award_honor.award_winner, organization.organization.headquarters-location.mailing_address.citytown, film.film.distributors-film.film_film_distributor_relationship.distributor, book.author.works_written, music.composition.composer, location.location.containedby, sports.sports_team.roster-sports.sports_team_roster.player, education.educational_institution.athletics_brand, sports.sports_team.arena_stadium, sports.sports_facility.teams, location.administrative_division.capital-location.administrative_division_capital_relationship.capital, location.location.nearby_airports, people.person.place_of_birth, tv.tv_program.regular_cast-tv.regular_tv_appearance.actor, award.award_category.nominees-award.award_nomination.award_nominee, film.film.story_by, award.award_category.nominees-award.award_nomination.ceremony, film.film.starring-film.performance.character, film.film.language, film.film.written_by, tv.tv_actor.starring_roles-tv.regular_tv_appearance.series, film.film.starring-film.performance.actor, government.politician.party-government.political_party_tenure.party, sports.sports_team.location, government.political_party.politicians_in_this_party-government.political_party_tenure.politician, award.award_category.winners-award.award_honor.ceremony, base.wikipedia_infobox.video_game.developer. Return the relation name(s) in JSON format {"answer": ["RELATION"]}. Use commas to separate multiple correct relations.

{"answer": ["cvg.computer_videogame.developer", "base.wikipedia_infobox.video_game.developer"]}