Sci-Fi

Sci-Fi themed games are games that are characteristic of science fiction literature; the narrative is dependent on the impact of scientific discoveries that do not yet exist in reality. Some games, such as those in the Half-Life series and Unreal series take place in a sci-fi universe that was created specifically for the purpose of the games. Others may take place in existing sci-fi universes, such as licensed Star Wars games. Common elements of sci-fi themed games include futuristic settings, high-tech items and weapons, and alien characters.

Doom (2016)

Doom (stylized as DOOM and originally known as Doom 4) is a first-person shooter video game developed by id Software and published by Bethesda Softworks. The game is a reboot of the Doom series and is the first major installment in the series since the release of Doom 3 in 2004. (Source: Wikipedia)

ARK: Survival Evolved

As a man or woman stranded, naked, freezing, and starving on the unforgiving shores of a mysterious island called ARK, use your skill and cunning to kill or tame and ride the plethora of leviathan dinosaurs and other primeval creatures roaming the land. Hunt, harvest resources, craft items, grow crops, research technologies, and build shelters to withstand the elements and store valuables, all while teaming up with (or preying upon) hundreds of other players to survive, dominate... and escape!

Space Farmers

Escape an alien space station in this zany co-op shooter.

Spirits of Xanadu

Investigate the cause of the spaceship Xanadu becoming stranded during a research mission.

Septerra Core: Legacy of the Creator

"At the very heart of Septerra lies the Core, a huge Biocomputer. Seven continents at different elevations, each with its own unique people and culture, orbit around the Core." - Steam store page

Earthsiege 2

Second game in the Earthsiege series. Protect the earth from the Cybrid invasion.

Re-released as freeware on the Tribes Universe site to celebrate the series' anniversary.

Urban Assault

Real-time strategy game with the option of controlling constructed vehicles directly from a first-person perspective.

MechWarrior 2: Mercenaries

Standalone expansion based on MechWarrior 2: 31st Century Combat. Take command of a mercenary unit and play a pivotal role in major battles.

Starlancer

Space flight combat simulator game set in the year 2160.