EVE: Dust 514
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Could be interesting
Kal Wardin, our hero, is a retired N.O.V.A. veteran summoned once again to don his Mobile Armor Suit in defense of the Colonial Administration forces. Helped by Yelena, his personal AI Agent, Kal must protect humanity's destiny by entering the battlefield against alien invaders while uncovering the mystery behind their sudden attack.
The Cycle is a Competitive Quest Shooter or PvEvP for insiders. You play as a prospector sent on Fortuna III, a living and unstable planet swarming with hostile alien wildlife. Compete or deal a fragile pact with other Prospectors to claim as many resources as possible.
Join Section 9 in a first person shooter experience. Become a member of an elite force of cybernetically enhanced combat operatives dedicated to the defense of society, and use your advanced firepower, Tachikoma Tanks and unique cyber skills to bring down cyber terrorists in a connected world.
Star Trek: The Next Generation – Klingon Honor Guard is a first-person shooter set in the universe of Star Trek during the time of The Next Generation. The game was developed by MicroProse in 1998, using the Unreal game engine.
In the year 2010, a malicious virus has infected a virtual reality machine, the FireStarter. The intruding program has caused the computer to malfunction. The rules of the simulation have been altered in a potentially deadly manner, with the player's consciousness trapped inside. There is only one possible way to escape, by completing the game with a period of 48 virtual hours. The penalty for failing to do so is the ultimate one – real death.
"Hybrid is a multiplayer third person shooter in which two factions fight for world domination on a persistent world map. Take control of a soldier fighting for the Paladins or the Variants as they race to control the world's most powerful resource; Dark Matter. Your victories on the battlefield directly affect the course of the war!"
You are a lone mercenary on a mission and you'll be going all Schwarzenegger on folks!
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...
Day 1 Studios is producing this free-to-play mech combat game for the PC.