Half-Life 2 is a first person shooter video game released in 2004 and was named Metacritic's PC Game of the Year. The player takes control of Gordon Freeman, a research scientist who must save Earth from alien forces that were unleashed during an incident at Black Mesa. In this immersive world, the player's presence has an effect on their environment as well as the behavior and emotions of enemies and allies alike. With exciting suspenseful gameplay and stunning realism, Half-Life 2 offers an unforgettable experience to all players as they strive to rescue humanity from its impending doom.

Black Mesa is a re-envisioning of Valve Software's classic game Half-Life. Players will experience the journey of Gordon Freeman through the Black Mesa Research Facility with enhanced visuals, music, voice acting and dialogue for an immersive experience. There are detailed environments to explore as well as a large cast of characters and experimental weaponry to use in this updated version of Half-Life.

Half-Life 2: Episode Two is the second installment in Valve's award-winning Half-Life trilogy. Players take on the role of Dr. Gordon Freeman as he travels with Alyx Vance to deliver a crucial information packet stolen from the Citadel to an enclave of resistance scientists. Along the way, they must battle and race against Combine forces while navigating White Forest. The game offers unique weapons, vehicles, and creatures that extend the gameplay found in its predecessor.

Vampire: The Masquerade - Bloodlines is a visually stunning first-person role-playing game that combines intense action with an open, non-linear world. Developed by Troika Games and based on White Wolf's pen-and-paper RPG series, the game plunges players into the dark vampire underworld of modern day Los Angeles. Players inhabit a creature of the night and have access to incredible vampire powers, skills, and traits which they can use to interact with mortals and other creatures of darkness in order to battle them. Built using Valve Source Technology -the same engine used for Half Life 2-, Vampire: The Masquerade - Bloodlines offers an immersive storyline designed to create a captivating experience for gamers.

Half-Life 2: Episode One is an all-new episode created by Valve that continues the Half-Life 2 single player adventure. Players take on the role of Dr. Gordon Freeman, who must face the consequences of his actions in City 17 and the Citadel. Along with Alyx Vance and her robot Dog, players join forces with the resistance to battle against Combine forces. Through this thrilling adventure, players will experience a gripping story line filled with intense action and immersive environments.

The Stanley Parable HD Remix is an updated version of the popular Half-Life 2 mod The Stanley Parable. It is a first person exploration game that allows players to experience both freedom and structure as they play through Stanley's story - or lack thereof. Players will be presented with choices throughout their journey, but ultimately it is up to them how they want to progress and if they ever reach the end of the game. With its unique approach to storytelling and choice, The Stanley Parable offers a truly unique gaming experience.

Counter-Strike: Global Offensive is a popular first-person shooter video game released in 2012. It is the fourth installment of the Counter-Strike franchise and builds upon its predecessor by introducing new maps, characters, weapons, and updated versions of classic CS content. The game has become one of the most popular online shooters with millions of players around the world competing in different game modes such as competitive ranked matches or casual ‘deathmatch’ style games. Players can choose from a variety of weapons to customize their loadouts for each match and use tactics to outsmart their opponents in order to win rounds.

Team Fortress 2 (TF2) is the highly-anticipated sequel to the game that started class-based, multiplayer team warfare. TF2 offers a unique art style powered by Valve’s next generation animation technology and persistent player statistics, along with new gametypes. It features a broad range of combat classes for players to choose from - Pyro, Heavy, Spy, Scout, Sniper, Medic, Engineer, Demoman or Soldier - each providing tactical abilities and personalities for varied player skills. With advanced graphics compared to any other Source-based game released so far and exciting class-based action experience TF2 promises an unforgettable gaming experience.

The Beginner's Guide is a narrative video game created by Davey Wreden, the creator of The Stanley Parable. It has no traditional mechanics or goals and lasts approximately an hour and a half. Through this game, players experience the story of someone struggling to come to terms with something that they don't understand. This exploration of understanding provides insight into how we process our own emotions when faced with difficult situations in life.

Titanfall is a fast-paced, multi-player video game crafted by the co-creator of Call of Duty and other key developers. Players have the freedom to fight as both elite assault Pilots and heavily armored Titans using advanced combat techniques. The cinematic universe provides dramatic moments that make Titanfall an exciting experience for gamers.

Left 4 Dead is a co-operative multiplayer action game from Turtle Rock Studios, the creators of Counter-Strike. The game takes place in an apocalyptic world where a highly virulent strain of rabies has spread quickly through the human population, turning those infected into violent psychopaths. Players are among the few seemingly immune to this virus and must fight their way to safety or die alone alongside other Survivors. Left 4 Dead is built with version 2 of Turtle Rock's advanced A.I technology and runs on Source Engine for enhanced visuals and gameplay experience. In Left 4 Dead, players will have to work together if they want any chance at survival in this chaotic post-apocalyptic world.

Dota 2 is a strategic multiplayer online battle arena (MOBA) game based on the original Defense of the Ancients title. In Dota 2, players control characters known as "heroes" and are pitted against an opposing team in battles that take place in a fantasy setting. The game features all the same characters and factions from the original Defense of the Ancients, but with added features such as improved graphics, new maps, and more detailed hero customization options. Players can also join or create their own clans to compete in tournaments for prizes.

Dark Messiah of Might and Magic is a first-person video game developed by Ubisoft. It allows players to immerse themselves in the legendary Might and Magic universe as never before with its complete first-person combat system. It takes advantage of the Source Engine's exceptional technology, such as character animation, advanced AI, real-world physics and shader-based rendering for an immersive gaming experience.

Counter-Strike: Source is a popular video game from Valve that uses the Source engine. It has recreated maps from Counter-Strike 1.6, such as Office, Havana, Italy, Aztec, Chateau and more with new textures and improved buildings and scenery. Objects in these levels react realistically to the physics engine of the Source engine. The game can be downloaded through Valve's Steam service with Half-Life 2 included in the package.

Dear Esther is a first-person narrative video game that focuses on exploration and uncovering the mystery of an isolated island, as well as who the player character is and why they are there. As players explore different locations around the island, they will be provided with random fragments of story to piece together in order to progress through the game. Each journey through Dear Esther will be a unique experience for each individual player.

Alien Swarm is a free video game that combines cooperative play and squad-level tactics in an epic bug hunt. Players form squads of four IAF Marine classes, and use unlockable weapons with different loadout configurations to fight a variety of aliens. They must battle through environments like icy planets and lava-flooded mining facilities to eradicate the alien infestation. Along with the game comes access to the complete code base for Alien Swarm, which has updates to the Source engine as well as 3rd person camera, depth of field, improved dynamic shadows and other gameplay additions.

Dark Messiah of Might and Magic: Elements is an action-RPG set in the dark world of Ashan, where players take on the role of Sareth, a young hero. Players can choose to evolve their character with spells, skills and abilities that will determine their destiny. The game has undergone several improvements in gameplay design as well as technical aspects like a new lock-on feature and tweaked level design. It also features three secret levels with unique objectives, rewards and multiplayer maps created exclusively for Xbox 360. With up to 10 players online you can play as either Human or Undead characters such as archers, priestesses, mages or knights with powerful unique skills such as meteor shower, berserk charge or rain of arrows at your disposal.

Day of Defeat: Source is a multiplayer, team-based game set in the WWII European theatre of operations. Players select roles and complete missions based on historical events. The game has been upgraded with Valve's advanced engine technology, Source, which was created for Half-Life 2. This improved graphics feature includes support for HDR lighting and optimized versions of popular maps as well as redesigned sound and new player, weapon and world models. Other features include integrated physics simulation for ragdolls and physically simulated objects; higher resolution textures; bump mapping; specular lighting; completely redesigned user interface; all new voice, weapon and ambient sounds - all powered by advanced Source engine technology.

Bloody Good Time is a multiplayer shooter game developed for Valve's Source engine. Players are placed in a Hollywood movie set and given the opportunity to choose their own thrilling adventure. From a beachhouse during spring break, to a terrifying Vegas hotel, players must survive the ruthless world of movie-making while also starring in their own horror film. Up to eight people can join together online and experience this unique first person shooter game.

Nuclear Dawn is a first-person shooter video game set in a post-apocalyptic landscape. Players take on the role of soldiers fighting for control over various cities, taking on enemies with an array of weapons and loadouts as either armoured, assault or stealth infantry. The action in Nuclear Dawn is fast and intense, requiring skillful tactics rather than quick reflexes or memorization abilities to succeed.

Tactical Intervention is a first-person shooter video game created by Minh ‘Gooseman’ Le, one of the co-creators of Counter Strike. Players take on the roles of either Terrorists or Counter Terrorists in an expansive world with fast-paced driving combat and intelligent AI hostages. The game features a range of modern weapons and authentic gear such as breaching charges and riot shields, making for intense firefights across real world locations like skyscrapers, subway trains, shopping malls, and highways.

Postal III is the third installment in the popular Postal series of video games. This version uses Valve's Source Engine, a game engine that provides advanced graphic capabilities and improved physics for a superior gaming experience. Players take on the role of "The Postal Dude", an anti-hero who traverses surreal levels filled with outrageous characters to complete missions, solve puzzles, and generally cause chaos. The game features a number of mini-games as well as first person shooter (FPS) gameplay. With its focus on dark humor, extreme violence, and over-the-top action scenes, Postal III adds new depth to an already cult classic franchise.