Everything on Steam, newest first: games, DLC, demos, playtests, software, tools, soundtracks and videos. New ones appear within seconds of Steam adding them.
On Steam, an app is one product: a game, a DLC, a demo, a soundtrack, a piece of software. Each has its own number (the App ID, the number in its store link), usually its own store page and community hub, and it is what shows up in your library.
You don't buy apps directly: you buy or activate a package, which unlocks one or more apps.
| App | Type | Released | Playing now | Owners (est.) |
|---|---|---|---|---|
 Trainz Simulator 12 DLC - DuchessApp 24675 | DLC | — | — | — |
 Trainz Simulator 12 DLC - Blue CometApp 24674 | DLC | — | — | — |
 Trainz Simulator DLC: AerotrainApp 24673 | DLC | — | — | 20–60† |
 Trainz Sim - PRRT1App 24637 | DLC | — | — | — |
 Trainz Simulator DLC: The DuchessApp 24635 | DLC | Jun 22, 2011 | — | — |
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We read every app on Steam continuously, so this list fills in and stays current on its own. Owners are SteamSpy's estimate for games and software; † marks an estimate from the app's Steam review count (about 20 to 60 owners per review), used for DLC, soundtracks and the rest.
| DLC |
| Aug 6, 2010 |
| — |
| — |
 King Arthur II - DLC1App 24497 | DLC | — | — | — |
 King Athur II Base Game GameApp 24496 | DLC | — | — | — |
 King Arthur II: Dead LegionsApp 24488 | DLC | Jan 27, 2012 | — | 220–660† |
 King Athur 2 Prologue_PressApp 24487 | DLC | — | — | — |
 King Athur 2 Base_ReleaseApp 24486 | DLC | — | — | — |
 King Athur 2 Base_TestApp 24483 | DLC | — | — | — |
 King Arthur - The Role-playing Wargame Saxon DLC HungarianApp 24451 | DLC | — | — | — |
 Do not useApp 24450 | DLC | — | — | — |
 King Arthur: The DruidsApp 24449 | DLC | Feb 3, 2011 | — | 160–480† |
 King Arthur - The Role-playing Wargame Polish SaxonApp 24448 | DLC | — | — | — |
 King Arthur: The SaxonsApp 24447 | DLC | Jul 8, 2010 | — | 100–300† |
 King Arthur: Legendary Artifacts DLCApp 24441 | DLC | Jan 19, 2010 | — | 80–240† |
 King Arthur: Knights and Vassals DLCApp 24440 | DLC | Jan 19, 2010 | — | 100–300† |
 Aquaria soundtrackApp 24422 | DLC | — | — | — |
 EverQuest II: Destiny of VeliousApp 24230 | DLC | — | — | — |
 DC Universe Online - Standard KeyApp 24209 | DLC | — | — | — |
 DC Universe Online - Bane's Venom KeyApp 24208 | DLC | — | — | — |
 Everquest II: Sentinel's FateApp 24190 | DLC | — | — | — |
 EverQuest: Seeds of Destruction Item CD KeyApp 24135 | DLC | — | — | — |
 EverQuest II: Rise of KunarkApp 24110 | DLC | — | — | — |
 EverQuest® II The Shadow Odyssey™App 24100 | DLC | Jan 16, 2009 | — | — |
 RailWorks 2 SD70MAC PackApp 24099 | DLC | — | — | — |
 RailWorks 2 SD70M-2 PackApp 24098 | DLC | — | — | — |
 RailWorks 2 Class 86 PackApp 24097 | DLC | — | — | — |
 Train Simulator: Falmouth Branch Route Add-OnApp 24096 | DLC | Dec 17, 2010 | — | 940–2.8K† |
 Train Simulator: Doncaster Works Route Add-OnApp 24095 | DLC | Dec 2, 2010 | — | 800–2.4K† |
 Railworks 2 Class 31 PackApp 24094 | DLC | — | — | — |
 RailWorks 2 AllAboardCoreApp 24093 | DLC | — | — | — |
 RailWorks 2 OhioSteelApp 24092 | DLC | — | — | — |
 RailWorks 2 Class170PackApp 24091 | DLC | — | — | — |
 RailWorks 2 Flying ScotsmanApp 24090 | DLC | — | — | — |
 RailWorks 2 SD70ACe PackApp 24089 | DLC | — | — | — |
 Railworks BonusScenario02App 24088 | DLC | — | — | — |
 Railworks 2PpackApp 24087 | DLC | — | — | — |
 Railworks AssetPack01App 24086 | DLC | — | — | — |
 RailWorks Class 56 Add-OnApp 24085 | DLC | Oct 1, 2010 | — | — |
 Railworks UK LED SignalsApp 24084 | DLC | — | — | — |
 Train Simulator: West Coast Main Line North Route Add-OnApp 24083 | DLC | Dec 1, 2011 | — | 1.5K–4.6K† |
 Train Simulator: Green & Gold HST DMU Add-OnApp 24082 | DLC | Sep 17, 2010 | — | 380–1.1K† |
 Railworks Up the Junction Add-OnApp 24081 | DLC | — | — | — |
 Railworks BigBoyPackCSApp 24080 | DLC | — | — | — |
 Railworks ThePortRoadApp 24079 | DLC | — | — | — |
 Railworks BigBoyPackApp 24078 | DLC | — | — | — |
 Railworks Class57App 24077 | DLC | — | — | — |
