WAperture Tag: The Paint Gun Testing Initiative is a 2014 first-person puzzle-platform video game developed by the Aperture Tag Team. Originally made as a mod of Valve's Portal series, it was released on July 15, 2014. The game removes the iconic portal gun of the series and instead utilizes a newly created paint gun that fires two kinds of gel with different properties. The game features new characters and voice acting, along with a co-op mode that includes a level editor.
WBlack Mesa is a first-person shooter game developed and published by Crowbar Collective. It is a third-party remake of Half-Life (1998) made in the Source game engine. Originally published as a free mod in September 2012, Black Mesa was approved by Half-Life developers Valve for a commercial release; the first commercial version was published as an early-access version in May 2015, followed by a full release in March 2020 for Windows and Linux.
WContagion is a survival horror first-person shooter video game, developed and published for PC by American independent studio Monochrome. It is the spiritual successor to Zombie Panic! Source. The game was mostly self-funded of its development, but with the support of others via a successful Kickstarter campaign, it was able to be released on Steam as an Early Access title. Contagion released on October 25, 2013 as a Steam Early Access title and was published as full release on April 11, 2014.
WDear Esther is a first-person exploration and adventure video game developed by The Chinese Room for Microsoft Windows, Mac OS X, PlayStation 4 and Xbox One. First released in 2008 as a free-to-play modification for the Source game engine, the game was entirely redeveloped for a commercial release in 2012. Featuring minimalistic gameplay, the player's only objective in the game is to explore an unnamed island in the Hebrides, Scotland, listening to a troubled man read a series of letters to his deceased wife. Details of her mysterious death are revealed as the player moves throughout the island.
WDino D-Day is a multiplayer team-based first-person shooter video game developed and published by American studios 800 North and Digital Ranch. It was released for Microsoft Windows on April 8, 2011.
WDystopia is a team-based, objective-driven, first-person shooter video game, developed as a total conversion modification on the Valve's proprietary Source engine. It is based on the cyberpunk literary and aesthetic genre; it is somewhat based on popular role-playing game Shadowrun, created by an amateur development team and released to the public for free. Its first playable build was released on September 9, 2005, after a year of planning and nine months of development. The first full version of Dystopia, Version 1, was released after 3 years of development on February 25, 2007.
WFistful of Frags is a multiplayer Western Half-Life 2 first-person shooter mod that involves team-based or free-for-all shootouts and cooperative games against AI managed enemies. It was released on Steam for Microsoft Windows, Mac OS and Linux on May 9, 2014, with several updates subsequently adding features and maps.
WFlipside is a mod for the video game Half-Life 2. It is a cardboard-themed side-scrolling platform game with the ability to turn the camera around 180 degrees to view the 2d cardboard world from the opposite side. Flipside was developed by Danish studio Team 3, a group of students from DADIU and released June 18, 2007.
WGarry's Mod is a 2006 sandbox game developed by Facepunch Studios and published by Valve. The base game mode of Garry's Mod has no set objectives and provides the player with a world in which to freely manipulate objects. Other game modes, notably Trouble in Terrorist Town, are created by other developers as mods and are installed separately, by means such as the Steam Workshop. Garry's Mod was created by Garry Newman as a mod for Valve's Source game engine and released in December 2004, before being expanded into a standalone release that was published by Valve in November 2006. Ports of the original Microsoft Windows version for Mac OS X and Linux followed in September 2010 and June 2013, respectively. As of September 2021, Garry's Mod has sold more than 20 million copies.
WHunt Down the Freeman is a 2018 first-person shooter video game. Developed by Royal Rudius Entertainment, it is an independently developed unofficial installment to the Half-Life franchise.
WInsurgency: Modern Infantry Combat is a total conversion mod for Valve's Source engine. Released in 2007, it's a multiplayer tactical shooter, focused on a realistic experience, compared to other titles in that period. The game is primarily set in Iraq and Afghanistan, in a war between the United States Marine Corps, and a group of rebel insurgents.
WJailbreak: Source is a multiplayer team-based first-person action video game, developed as a total conversion modification on the Valve's proprietary Source engine. The game is currently in beta development stages, with its first public release on the 14th of February 2007. 0.2 followed a week later as a patch. The third major public version was released two months later on April 21, 2007. The next release was made available just over a year later, on May 3, 2008 the latest version (0.6) was released on 15 January 2010.
WKorsakovia is a single-player mod for Valve's video game Half-Life 2. It was developed by Thechineseroom. Korsakovia was released as freeware download on 20 September 2009.
WMinerva is an episodic series of single-player modifications ("mods") for Valve's Half-Life 2. The mod was created by Adam Foster. Installments are released as each is finalized: the three releases for the Metastasis chapter have already been made, with the third installment released on October 1, 2007.
WNo More Room in Hell is a cooperative first person survival horror video game, created by Matt "Maxx" Kazan and initially developed as a modification on Valve's Source game engine. Set in a zombie apocalypse, the player assumes the role of one of eight remaining survivors, with a focus on co-operation and survival. The game can be played through "Objective" or "Survival" mode. It is heavily inspired by George Romero's Living Dead series, with the title being a reference to Dawn of the Dead, specifically the line "When there's no more room in hell, the dead will walk the earth.", and some characters being references to other films such as American Psycho and The Big Lebowski.
WPirates, Vikings and Knights II is a multiplayer team-based first-person action video game, developed as a total conversion modification on Valve proprietary Source engine. The game is currently in beta development stages, with its first public release on 1 January 2007. The second major public version was released a year later on 7 February 2008.
WPortal Reloaded is a 2021 free fan modification for Portal 2 created by German developer Jannis Brinkmann. As in the official Portal games, gameplay involves solving puzzles by manipulating portals which allow the player to move through space. Additionally, the mod allows players to shoot a third "time portal", allowing traversal across two versions of the puzzle chamber in different time periods. Initially envisioned as a smaller project, the game was released as a full-scale mod on April 19, 2021, receiving positive reception by multiple gaming outlets.
WPortal Stories: Mel is a single-player mod for Portal 2 developed by Prism Studios. The mod was released on June 25, 2015, for Microsoft Windows, OS X and Linux systems, available freely to users who own Portal 2 on Steam. Like the official Portal games, it is a puzzle-platformer that involves placing interconnected "portals" to solve puzzles. Set in the Portal universe, players control the test subject Mel, who has to escape an underground facility after she spends decades in artificial hibernation. Reviewers largely praised the mod's visual design and ambition, though they criticised its difficulty; later updates added a "story mode" that made the puzzles easier.
WThe Stanley Parable is an avant-garde interactive drama designed and written by developers Davey Wreden and William Pugh. The game carries themes such as choice in video games, the relationship between a game creator and player and predestination/fate. The game was originally released on July 31, 2011, as a free modification for Half-Life 2 by Wreden. Together with Pugh, Wreden later released a stand-alone remake using the Source engine under the Galactic Cafe studio name. The remake included new story elements and upgraded graphics. It was announced and approved via Steam Greenlight in 2012, and was released on October 17, 2013, for Microsoft Windows. Later updates to the game added support for OS X on December 19, 2013, and for Linux on September 9, 2015.
WThinking with Time Machine is a single-player mod for Portal 2 developed by Stridemann, and released by SignHead Studio. It was initially released to Steam on April 2014, for Microsoft Windows, OS X, and Linux systems, available freely to existing owners of Portal 2.
WZombie Panic! Source is a cooperative survival-horror Half-Life 2 first-person shooter modification. It is the sequel to the Half-Life mod Zombie Panic. Set in the middle of a zombie apocalypse, players start as a small group of survivors attempting to stay alive. Each map will have its own objectives to complete and win the round or survive by a period of time.