Kerbal Space Program is a space flight simulator game where players design, build, and launch their own spacecraft, aiming to complete various missions and explore different planets.

The Reapers are a mysterious and powerful alien race in (\text{Mass Effect}) that periodically return to harvest organic life forms in the galaxy.

In (\text{Mass Effect}), players control Commander Shepard, who travels through space in the (\text{Normandy}) to investigate a threat to the galaxy.

Planet Popstar is the home planet of Kirby, the protagonist of the (\text{Kirby}) series, which is known for its colorful and whimsical environments.

In (\text{No Man's Sky}), players explore a vast and procedurally generated universe, discovering new planets, collecting resources, and encountering various alien life forms.

Commander Keen is a platform game series where players control the titular character, a young boy genius who travels through space in his spaceship, battling enemies and collecting artifacts.

The Covenant is a powerful alien alliance in the (\text{Halo}) series, composed of various species united by their religious beliefs and their desire to control the galaxy.

Metroid is an action-adventure game series where players control Samus Aran, a bounty hunter who wears a powered exosuit and explores alien planets, battling enemies and uncovering secrets.

Kreia is a mysterious and powerful Jedi Master in (\text{Star Wars: Knights of the Old Republic}) who trains the player character and guides them on their journey.

Half-Life is a first-person shooter game where players control Gordon Freeman, a scientist who must fight his way through a research facility overrun by aliens after a failed experiment.

Credits are the primary currency in (\text{Elite Dangerous}) and are used to purchase ships, equipment, and other items, as well as to pay docking fees and fines.

Tomb Raider is an action-adventure game series where players control Lara Croft, a skilled archaeologist and adventurer who explores ancient ruins and tombs, solving puzzles and battling enemies.

The Persistent Universe in (\text{Star Citizen}) is a vast and dynamic online universe where players can explore, trade, engage in combat, and interact with other players in real-time.

Dead Space is a survival horror game where players control Isaac Clarke, an engineer who must repair a massive space station overrun by grotesque alien creatures known as Necromorphs.

The Vex are a mysterious and powerful alien race in (\text{Destiny}) that are characterized by their time-traveling abilities and their desire to reshape the universe according to their own logic.