Alyx appears in the
video game Half-Life 2 as a recurring ally to protagonist
Gordon Freeman, and the daughter of
Eli Vance, all of whom operate as members of the Resistance. She is first encountered when she saves Gordon from an attack, and later gives him the gravity gun (a tool used to manipulate objects) while playing with her robot,
Dog. She helps Gordon through various incidents, including helping rescue her father and defeating one of the game's antagonists, Wallace Breen. She also has disputes with the character Judith Mossman, who later betrays them before they eventually make peace and work together. She ultimately becomes separated from Gordon after
the G-Man stops time during a
dark energy explosion at the Citadel, removing Gordon from that point in time and leaving Alyx. In the expansion,
Half-Life 2: Episode One, it's revealed that Alyx was rescued by
Vortigaunts, who also retrieve Gordon from G-Man, leaving them both outside the Citadel. They work together to delay the explosion by slowing the core's progression toward meltdown. They later go through a zombie-infested underground station and later working with
Barney Calhoun to rescue members of the rebellion before the Citadel explodes. In
Half-Life 2: Episode Two, Alyx and Gordon travel to the
White Forest Rocket Facility to deliver a crucial information packet stolen from the Citadel. Along the way, she is gravely wounded by a
Combine Hunter. Healing her requires Gordon to make a dangerous trek through an Antlion colony to retrieve their "larval extract," an essential ingredient in the Vortigaunt healing process. As part of the healing process, her life is entwined with Gordon's. During this time, the G-Man appears to Gordon in a surreal "heart-to-heart" sequence and programs Alyx to tell her father to "prepare for unforeseen consequences." Once Alyx awakens, she and Gordon resume their quest toward White Forest. She delivers the Combine data to Dr. Kleiner, who manages to decrypt it and discover that Judith Mossman has found the legendary
Borealis, an icebreaker ship which has disappeared during teleportation experiments. She delivers the message to her father after the G-Man triggers her programming, and later, two creatures called Advisors break in and kill Eli before Dog saves Gordon and Alyx. Alyx is the titular playable protagonist of the 2020 virtual reality game
Half-Life: Alyx developed by Valve. In 2020, an Alyx-inspired
skin was added to the
massive multiplayer online obstacle course battle royale game
Fall Guys. ==Gameplay==