Nexuiz

For centuries the Kavussari and the Forsellians have waged war. They have a fragile truce but due to their seething disgust of each other they still pit their warriors against each other in arenas rather than on the fields of war. Those episodes of lethal combat are now broadcast throughout the galaxy, as entertainment… a spectacle known as… The Nexuiz Competition: An arena based first person shooter where you can alter the rules of the match and laws of physics while you dominate opponents in ever-changing hostile environments bleeding with hatred.

Xonotic is an addictive, arena-style first person shooter with crisp movement and a wide array of weapons. It combines intuitive mechanics with in-your-face action to elevate your heart rate. Xonotic is and will always be free-to-play. It is available under the copyleft-style GPLv3+ license.

Gene Rain is a next-gen 3D third person shooter game. The story is set in a futuristic world, with a linear narrative structure, and uses shocking visual effects to present a brand new world for the players ' enjoyment.

Rogue Warrior is a character-driven, first-person-shooter, featuring Richard Demo Dick Marcinko's explosive personality in an action-packed single player campaign, and intense multiplayer combat.

Quake 4 is a action shooter game which serves as the another chapter in the Quake series.

Quake III Arena is a first-person shooter built around competitive multiplayer combat. Unlike earlier entries in the Quake series, it has no story-driven campaign, and its single-player mode instead pits the player against computer-controlled bots across a series of increasingly difficult arenas. Matches take place in maps that mix gothic and technological architecture, with weapons and power-ups spawning at fixed points that players fight to control. Movement techniques such as strafe-jumping and rocket-jumping are central to high-level play. Game modes include free-for-all deathmatch, team deathmatch, one-on-one tournament duels, and capture the flag, and the game supports network and internet play along with extensive customization and modding.

Rebel Galaxy Outlaw is an open-world space combat adventure game, spread across the nearly 40 systems of the Dodge Sector. Play as a mercenary, a trader, a pirate, or whatever mix of the three you feel fits you best. With an engaging storyline and a full conversation system, you can follow the narrative, or ignore it and forge your own path at any time.

Counter-Strike is a team-based multiplayer tactical first-person shooter in which players join either the Terrorist or Counter-Terrorist side and compete in objective-based rounds. The primary game modes involve bomb defusal and hostage rescue, played across designated maps. Players purchase weapons and equipment between rounds using money earned from eliminations and completed objectives, and eliminated players must wait until the next round to respawn. Originally a fan-made modification for Half-Life created by Minh Le and Jess Cliffe in 1999, it was acquired by Valve and released as a standalone retail product in 2000, becoming one of the most influential first-person shooters and spawning multiple sequels including Counter-Strike: Source, Global Offensive, and Counter-Strike 2.

Blazing Chrome is a classic co-op run 'n gun with an original arcade feel. Players can choose between Mavra, the badass human resistance, soldier or Doyle, the groovy rebel robot, to kick some metal ass.

Hytale combines the scope of a sandbox with the depth of a roleplaying game, immersing players in a procedurally generated world where teetering towers and deep dungeons promise rich rewards throughout their adventures. Hytale supports everything from block-by-block construction to scripting and minigame creation, delivered using easy to use and powerful tools.

Rico is an arcade-style, first-person shooter inspired by modern action cinema. In the game you and a friend play as a pair of loose-cannon police partners, given twenty-four hours to crack a case as part of an elite organised crime taskforce. Planning is tactical rather than strategic, players must react in the moment to shootouts as they unfurl, with additional extra time to assess the situation if they are able to surprise their adversaries. Ammo and enemies are plentiful, and combat is punchy and impactful, supported by an extensive destruction system that ensures every shot looks and feels great.

Inversion is a third-person co-op shooter that combines hard-hitting, adrenaline-pumping action with a revolutionary gravity manipulation engine. Featuring the Grappler weapon, players will be able to manipulate gravity for their own purposes.