Half-Life: Source

Half-Life is a 1998 first-person shooter (FPS) game developed by Valve Corporation and published by Sierra Studios for Windows. It was Valve's debut product and the first game in the Half-Life series. The player assumes the role of Gordon Freeman, a theoretical physicist who must escape from the Black Mesa Research Facility after it is overrun by aliens following a disastrous scientific experiment. Its gameplay consists of diverse combat, exploration and puzzles.

Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Alyx Vance and her father Eli mount an early resistance to the Combine's brutal occupation of Earth.

Half-Life 2: Episode Two is a first-person shooter set in the aftermath of the Citadel's destruction. Players control Gordon Freeman as he and Alyx Vance travel through forests and underground tunnels toward a resistance base, facing Combine forces and new enemy types along the way. The game emphasizes vehicle-based combat sequences alongside the series' physics-driven puzzles and gunplay.

Half-Life 2: Episode One is the first of a planned trilogy of expansion packs/episodes for the 2004 first-person shooter game, Half-Life 2. The episode takes place immediately after the end of Half-Life 2, in the war-torn setting of City 17. The player is forced to deal with the effects of their actions during the main game. The episode is a stand-alone game; while a continuation of Half-Life 2, it does not require the original game to be installed or registered to a user's Steam account to play. It takes advantage of several major upgrades to the Source engine since the release of Half-Life 2, primarily its high dynamic range rendering capabilities and the upgraded facial animation system. Episode One was released together with Half-Life Deathmatch: Source, a port of the original Half-Life's multiplayer, which doubles as Episode One's multiplayer component. The retail copies of Episode One also come with Half-Life 2 Deathmatch for those who have not previously purchased the later title.

Black Mesa: Definitive Edition includes performance improvements with a higher frame rate in some levels and visual upgrades, as well as all new and expanded Xen levels.

Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Alyx Vance and her father Eli mount an early resistance to the Combine's brutal occupation of Earth.

Black Mesa is a re-envisioning of Valve Software's classic science fiction first person shooter, Half-Life. Powered by Source Engine, You will re-visit the inaugural role of Gordon Freeman and his memorable journey through the Black Mesa Research Facility. Expect detailed environments to explore, a huge cast of characters and experimental weaponry. All-new music, voice acting, choreography and added dialogue give way to a more expansive and immersive experience than ever before.

The game follows FBI Special Agents Fox Mulder (voiced by David Duchovny) and Dana Scully (voiced by Gillian Anderson) as they travel to a small town in the Rocky Mountains to dig into the source of some strange and unexplained murders. Sightings of ghostly apparitions, zombies and hints of alien presence lead them on a chase for an "inhuman" killer. During the course of the story, Mulder and Scully follow leads to a remote location in Russia and then discover, and search, a mysterious half-buried alien space ship. Players can play as Mulder or Scully as they attempt to prevent alien colonization of Earth.

Experience the Half-Life expansion packs like never before. Operation: Black Mesa features reimaginings of both Half-Life: Opposing Force and Half-Life: Blue Shift through two unique campaigns. How will you survive the Black Mesa Incident? It's time to choose.

Earth is dying and humanity is running out of time. 12 light years from home, Tau Ceti f offers a small sliver of hope. When the colony ship Cassiopeia crash lands on the planet, its crew soon realize they are far from being alone. In space, death takes many forms.

A unique blend of puzzle-solving and action-platforming. Play a lone Shiba Inu charged with commanding massive, marching crowds to the goal in Story Mode, or browse a wide array of user-made levels crafted via the in-game Stage Creator!

Hidden Deep is 2D action & exploration sci-fi thriller game (for PC) where you command group of explorers deep under the ocean floor to find out what happened to previous expedition to which contact has been lost. As they go deeper and deeper, they discover strange structures and deadly unknown organisms.

You wake up on a spaceship, dazed and confused from the effects of cryosleep, and begin to search for the rest of the crew. Where could they have gone? All too suddenly, you discover that most of them are dead, and those still alive are… changed. With Syndrome, Camel 101 takes first person survival horror back to its roots. In the dark confines of the ship, you look for ways to defend yourself. There are a few weapons scattered about, but nowhere near enough ammunition to deal with all the transformed monstrosities. To survive and uncover the events that took place while you were asleep, you can’t always face your enemies head on; sometimes hiding and breathing as noiselessly as possible is your best course of action. Careful resource management is a key part of Syndrome, but so is learning your enemies’ behavior. What will attract their attention? What will give you a few precious seconds to pass by undetected? Take note―each misstep could be deadly.

Set in the iconic Alien universe, Aliens: Fireteam Elite is a cooperative 3rd-person survival shooter that drops your fireteam of hardened marines into a desparate fight to contain the evolving Xenomorph threat. Create and customize your own Colonial Marine, choosing from an extensive variety of classes, weapons, gear and perks, battling overwhelming odds in this heart-pounding survival shooting experience.

GAME OVER, MAN! The Xenomorph, the ultimate killing machine, returns. Only the Universe's toughest, the Colonial Marines, can exterminate the galaxy's most feared species. Can you fight off the terror of the alien infestation? -Choose you squad and watch the dynamic story system adapt -Pick up where the Aliens crew left off and fight through the U.S.S. Sulaco, planet LV-426, and more! -Load up with iconic weapons from the film, including pulse rifles, smart guns, and flamethrowers.

In Concord, you play as the crew of the Northstar—a group of guns-for-hire known in our galaxy as Freegunners. The Freegunners roam the stars taking high-stakes jobs on worlds across Wild space, where they face other fiercely competitive Freegunner crews. From match-to-match, you’ll form your team of Freegunners with other players and battle it out with rival crews to take home the reward across a variety of maps and modes.

Strap on your proton pack and Meta Quest 2 and step into the world of Ghostbusters in immersive virtual reality. Run your Ghostbusters HQ in a new city, San Francisco, and unravel a rich mystery in a new chapter for the Ghostbusters universe.