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Valve released a freely available application programming interface (API) called Steamworks in 2008, which developers can use to integrate Steam's functions into their products, including in-game achievements, microtransactions, and user-created content support. Initially developed for Microsoft Windows operating systems, Steam was released for macOS in 2010 and Linux in 2012. Mobile apps to access online Steam features were first released for iOS and Android in 2012. The platform also offers other digital content and Valve gaming hardware, including productivity software, game soundtracks, videos and VR headset Valve Index.
In May 2007, ATI included Steam in the ATI Catalyst GPU driver as well as offering a free Steam copy of Half-Life 2: Lost Coast and Half-Life 2: Deathmatch to ATI Radeon owners.[32] In January 2008, Nvidia promoted Steam in the GeForce GPU driver, as well as offering a free Steam copy of Portal: The First Slice to Nvidia hardware owners.[33] Traditional retail versions of games required mandatory installation of Steam, Call of Duty: Modern Warfare 2 from Activision in 2009,[34] Fallout: New Vegas from Bethesda Softworks in 2010[35] and Dragon Age II from Electronic Arts in 2011.[36]
In conjunction with developers and publishers, Valve frequently provides discounted sales on games on a daily and weekly basis, sometimes oriented around a publisher, genre, or holiday theme, and sometimes allow games to be tried for free during the days of these sales. The site normally offers a large selection of games at discount during its annual Summer and Holiday sales, including gamification of these sales to incentive users to purchase more games.[80]
The Anti-Defamation League published a report that stated the Steam Community platform harbors hateful content in April 2020.[145] In January 2021, a trading card glitch let players generate Steam Wallet funds from free Steam trading cards with bots using Capcom Arcade Stadium and other games, resulting in the game becoming one of the statistically most played titles.[146]
Since November 2013, Steam has allowed for users to review their purchased games and organize them into categories set by the user and add to favorite lists for quick access.[147]Players can add non-Steam games to their libraries, allowing the game to be easily accessed from the Steam client and providing support where possible for Steam Overlay features. The Steam interface allows for user-defined shortcuts to be added. In this way, third-party modifications and games not purchased through the Steam Store can use Steam features. Valve sponsors and distributes some modifications free of charge;[148] and modifications that use Steamworks can also use VAC, Friends, the server browser, and any Steam features supported by their parent game. For most games launched from Steam, the client provides an in-game overlay that can be accessed by a keystroke. From the overlay, the user can access his or her Steam Community lists and participate in chat, manage selected Steam settings, and access a built-in web browser without having to exit the game.[149] Since the beginning of February 2011 as a beta version, the overlay also allows players to take screenshots of the games in process;[150] it automatically stores these and allows the player to review, delete, or share them during or after his or her game session. As a full version on February 24, 2011, this feature was reimplemented so that users could share screenshots on websites of Facebook, Twitter, and Reddit straight from a user's screenshot manager.[151]
In 2012, Valve announced Steam for Schools, a free function-limited version of the Steam client for schools.[158] It was part of Valve's initiative to support gamification of learning for classroom instruction. It was released alongside free versions of Portal 2 and a standalone program called "Puzzle Maker" that allowed teachers and students to create and manipulate levels. It featured additional authentication security that allowed teachers to share and distribute content via a Steam Workshop-type interface, but blocks access from students.[159][160]
Valve provides developers the ability to create storefront pages for games ahead of time to help generate interest in their game ahead of release.[194] This is also necessary to fix a release date that functions into Valve's "build review", a free service performed by Valve about a week before this release date to make sure the game can be installed and run, and other checks to make sure the game's launch is otherwise trouble-free.[195] Updates in 2020 to Discovery queues have given developers more options for customizing their storefront page and how these pages integration with users' experiences with the Steam client.[195]
Valve offers Steamworks, an application programming interface (API) that provides development and publishing tools to take advantage of Steam client's features, free-of-charge to game and software developers.[196] Steamworks provides networking and player authentication tools for both server and peer-to-peer multiplayer games, matchmaking services, support for Steam community friends and groups, Steam statistics and achievements, integrated voice communications, and Steam Cloud support, allowing games to integrate with the Steam client. The API also provides anti-cheating devices and digital copy management.[197] In 2016, after introducing the Steam Controller and improvements to the Steam interface to support numerous customization options, the Steamworks API was also updated to provide a generic controller library for developers and these customization features for other third-party controllers, starting with the DualShock 4.[198] Steam's Input API has since been updated to include official support for other console controllers such as the Nintendo Switch Pro Controller in 2018,[199] the Xbox Wireless Controller for the Xbox Series X and Series S consoles, and the PlayStation 5's DualSense, as well as compatible controllers from third-party manufacturers in 2020.[200][201] In November 2020, Valve said the controller usage had more than doubled over the past 2 years.[202] In March 2019, Steam's game server network was opened to third party developers.[203]
Valve announced Steam Greenlight to streamline game addition to the service in July 2012 and released the following month.[235] Through Greenlight, Steam users would choose which games were added to the service. Developers were able to submit information about their games, as well as early builds or beta versions, for consideration by users. Users would pledge support for these games, and Valve would help to make top-pledged games available on the Steam service.[236] In response to complaints during its first week that finding games to support was made difficult by a flood of inappropriate or false submissions,[237] Valve required developers to pay US$100 to list a game on the service to reduce illegitimate submissions. Those fees were donated to the charity Child's Play.[238] This fee was met with some concern from smaller developers, who often are already working in a deficit and may not have the money to cover such fees.[239] A later modification allowed developers to put conceptual ideas on the Greenlight service to garner interest in potential projects free-of-charge; votes from such projects are visible only to the developer.[240] Valve also allowed non-gaming software to be voted onto the service through Greenlight.[241]
By February 2017, Valve reported that with the second Discovery update, the number of games shown to users via the store's front page increased by 42%, with more conversions into sales from that viewership. In 2016, more games are meeting a rough metric of success defined by Valve as selling more than $200,000 in revenues in its first 90 days of release.[259] Valve added a "Curator Connect" program in December 2017. Curators can set up descriptors for the type of games they are interested in, preferred languages, and other tags along with social media profiles, while developers can find and reach out to specific curators from this information, and, after review, provide them directly with access to their game. This step, which eliminates the use of a Steam redemption key, is aimed to reduce the reselling of keys, as well as dissuade users that may be trying to game the curator system to obtain free game keys.[260]
In November 2009, online retailers Impulse, Direct2Drive and GamersGate refused to offer Call of Duty: Modern Warfare 2 because it includes mandatory installation of Steamworks.[34] Direct2Drive accused Steamworks of being a "trojan horse", directing users to Valve's store.[437] In December 2010, MCV/Develop reported that "key traditional retailers" would stop offering games that integrate Steam.[438] One UK retailer said if there was already a digital service, they did not want to start selling a rival in physical stores.[438] In June 2009, Doug Lombardi said Steam free weekends for Left 4 Dead on Steam had boosted sales at retail and Xbox 360 as well.[439] Valve's business development director Jason Holtman replied Steamworks' features were chosen by developers and based on consumer wants and that Modern Warfare 2 was one of Steam's "greatest sellers".[440] In December 2011, Football Manager 2012 developer Sports Interactive said the Steam requirement was a success because the game was not cracked for 10 days.[441]
Either run with steam-native, launch option LD_PRELOAD='/usr/lib/libfreetype.so.6:/usr/lib/libbrotlicommon.so.1:/usr/lib/libbrotlidec.so.1' %command%, and go to Properties > Compatibility, check "Force the use of a specific Steam Play compatiblity tool" and select "Steam Linux runtime".
gdb may report a crash in XGetICValues(), probably due to a bug in SDL1.3; fortunately SDL2.0 is compatible with trine 2, so just force it and see if it works by modifying the steam launch options (or by script/commandline if using the drm free version). 2b1af7f3a8
