4Kings had players competing in  first-person shooter video game published by who?
Activision
4Kings
4Kings or Four Kings was a professional computer game esports clan/team based in the United Kingdom.
 The team had players competing in "Return to Castle Wolfenstein", "Quake III", "Warcraft III", "Unreal Tournament" and "Counter-Strike".
 The most famous member of 4Kings is probably "Warcraft III" player Grubby.
 Philip Wride was a manager of the team.
Return to Castle Wolfenstein
Return to Castle Wolfenstein is a first-person shooter video game published by Activision, released on November 19, 2001 for Microsoft Windows and subsequently for PlayStation 2, Xbox, Linux and Macintosh.
 The game serves as both a remake and a reboot to the "Wolfenstein series".
 This single player game was developed by Gray Matter Interactive and Nerve Software developed its multiplayer mode.
 id Software, the creators of "Wolfenstein 3D", oversaw the development and were credited as executive producers.
 The multiplayer side eventually became the most popular part of the game, and was influential in the genre.
 Splash Damage created some of the maps for the Game of the Year edition.
 A loose sequel, titled "Wolfenstein", was released on August 18, 2009.
Black (video game)
Black is a first-person shooter video game, developed by Criterion Games and published by Electronic Arts.
 It was released in 2006 for the PlayStation 2 and Xbox video game consoles.
 The game is notable for its heavily stylized cinema-inspired action as well as its sound quality and focus on destructive effects during gameplay.
 "Black" has been said as having the best graphics for a first-person shooter for its time. Superhot
Superhot is an independent first-person shooter video game developed and published by Superhot Team.
 Though the game follows traditional first-person shooter gameplay mechanics, with the player attempting to take out enemy targets using guns and other weapons, time within the game only progresses when the player moves; this creates the opportunity for the player to assess their situation and respond appropriately, making the gameplay similar to strategy video games.
 The game is presented in a minimalist art style, with enemies in red and weapons in black, in contrast to the otherwise white and grey environment. First-person shooter engine
A first-person shooter engine is a video game engine specialized for simulating 3D environments for use in a first-person shooter video game.
 First-person refers to the view where the players see the world from the eyes of their characters.
 Shooter refers to games which revolve primarily around wielding firearms and killing other entities in the game world, either NPCs or other players. Tyrannosaurus Tex
Tyrannosaurus Tex is an unreleased first-person shooter video game for the Nintendo Game Boy Color portable console.
 The game generated high expectations, as it would have been the only first-person shooter released for the Game Boy Color. List of accolades received by Titanfall
Titanfall is a 2014 multiplayer, first-person shooter video game developed by Respawn Entertainment and published by Electronic Arts exclusively for Microsoft Windows, Xbox 360, and Xbox One.
 The game was highly anticipated as the debut title from developers formerly behind the successful "Call of Duty" franchise.
 It was released March 11, 2014, to what video game review score aggregator Metacritic called "generally favorable" reviews.
 Critics considered the game a successful evolution for the first-person shooter genre but did not agree as to whether the game delivered on its anticipation. Arunodoyer Agnishikha
Arunodoyer Agnishikha (Bengali: অরুণোদয়ের অগ্নিশিখা) or Flame of Sunrise is a first-person shooter video game developed by Trimatrik Interactive and published by SHOM Computers Ltd. in 2004.
 Based on the 1971 Bangladesh Liberation War, it is the first first-person shooter video game based on events of the war and developed in Bangladesh. GoldenEye 007 (2010 video game)
GoldenEye 007 is a 2010 first-person shooter video game developed by Eurocom and published by Activision for the Wii video game console, with a handheld version for Nintendo DS developed by n-Space.
 It is a modern reimagining of the 1995 "James Bond" film "GoldenEye", and a remake of the 1997 Nintendo 64 video game "GoldenEye 007".
 The game was officially announced by Nintendo at their E3 2010 conference presentation.
 The game was released on 2 November 2010 in tandem with another "James Bond" game, "".
 It took on the elements of a modern shooter while retaining a classic name.
 The game received positive reviews from critics.
 A remastering of the Wii game was released for the PlayStation 3 and Xbox 360 consoles in 2011, re-titled as "". Strafe (video game)
Strafe (stylized as STRAFE) is a first-person shooter video game developed by Pixel Titans and published by Devolver Digital.
 The game is an homage to 1990s first-person shooter video games, such as "Doom" and "Quake", advertised as to have "bleeding edge graphics and gameplay", citing the year 1996.
 It was released on May 9, 2017.