Space

AI War 2 is a grand strategy/RTS hybrid against a galaxy that has already been conquered by rogue artificial intelligence. It's also "a sequel to [Arcen's] enormo-space RTS AI War, which we called 'one of this year's finest strategy games' back in 2009" (Tom Sykes, PC Gamer)

PLANET ALPHA, a beautiful alien world filled with mystery and danger. Pursued by relentless enemies, you must harness the power of night and day as you struggle to survive.

Cryptark is a 2D sci-fi shooter where you take on the role of a heavily armed privateer seeking to earn government contracts by boarding deadly alien space-hulks. It's up to you to strategize a plan of attack, pick an equipment loadout, and destroy the central core to be victorious.

Prey is a first-person shooter survival horror video game developed by Arkane Studios and published by Bethesda Softworks.

In a world where humankind has embraced artificial intelligence, you are stranded on an abandoned spaceship.

Event[0] is a game about building a personal relationship with a machine.

You type messages into a computer, and Kaizen answers. As in any relationship, you experience gratitude, disappointment, and sometimes jealousy. It is by working through fears and anxieties of your virtual companion that you will find your way back to Earth.

Similar to the previous games in the series, Infinite Warfare is a first-person shooter. As the game introduces a new setting, outer space, new gameplay mechanics, such as zero-gravity environments, are included. Players are equipped with a boost pack, and a grappling hook, which allow players to move in these zero-gravity environments easily. As the game is set in space, players can visit different planets, satellites and asteroids in the solar system. (Wikipedia)

ADR1FT is an immersive First Person Experience (FPX) that tells the story of an astronaut in peril. Floating silently amongst the wreckage of a destroyed space station with no memory and a severely damaged EVA suit, the only survivor struggles to determine the cause of the catastrophic event that took the lives of everyone on board. The player fights to stay alive by exploring the wreckage for precious resources, and overcomes the challenges of an unforgiving environment to repair the damaged emergency escape vehicle and safely return home.

Mass Effect: Andromeda is an action role-playing video game developed by BioWare and published by Electronic Arts for PlayStation 4, Xbox One and Microsoft Windows.

"Explore a vast galaxy full of wonder! Paradox Development Studio, makers of the Crusader Kings and Europa Universalis series presents Stellaris, an evolution of the grand strategy genre with space exploration at its core."

This game is a great strategy full of diplomacy, and war! Start from the beginning and than research and expand your empire to hopefully take and conquer the entire galaxy.

The year is 2046 and mankind’s discovery of near-lightspeed fold engine propulsion has empowered mankind's Osiris expeditionary missions to the Gliese 581 system. You are the second colonization team sent by the U.N.E. (United Nations of Earth) to study potential habitable planets when your spacecraft malfunctions braking from light speed, forcing an emergency landing on the planet’s surface.