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.) |
|---|---|---|---|---|
 Mafia II DLC: Vegas PackApp 67350 | DLC | — | — | — |
 67300 Joe's AdventuresApp 67310 | DLC | — | — | — |
 67240 Jimmy's VendettaApp 67250 | DLC | — | — | — |
 67200 Joe's AdventuresApp 67210 | DLC | — | — | — |
 XCOM DLC 4App 66003 | DLC | — | — | — |
 The Bureau: XCOM Declassified - Hangar 6 R&D |
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 |
| Nov 19, 2013 |
| — |
| 2.2K–6.5K† |
 The Bureau: XCOM Declassified - Light Plasma PistolApp 66001 | DLC | Oct 15, 2013 | — | 1.2K–3.5K† |
 The Bureau: XCOM Declassified - Code BreakersApp 66000 | DLC | Oct 15, 2013 | — | 1.6K–4.7K† |
 Duke Nukem Forever First Access Club CodeApp 65959 | DLC | — | — | — |
 Borderlands: Claptrap's Robot RevolutionApp 65920 | DLC | Sep 28, 2010 | — | 5.3K–15.8K† |
 Advanced Technology PackApp 65811 | DLC | — | — | — |
 Elite Gear PackApp 65810 | DLC | — | — | — |
 Take on Helicopters - RearmedApp 65735 | DLC | — | — | 40–120† |
 Take on Helicopters - NoisecontrollersApp 65734 | DLC | — | — | 60–180† |
 Take On Helicopters: HindsApp 65733 | DLC | Mar 20, 2012 | — | 280–840† |
 Take On Helicopters: HindsApp 65732 | DLC | — | — | — |
 Arma 2: Private Military CompanyApp 65720 | DLC | Nov 30, 2010 | 1 | 6.2K–18.5K† |
 Arma 2: British Armed ForcesApp 65700 | DLC | Aug 27, 2010 | 1 | 6.4K–19.1K† |
 Train Simulator: BNSF SD75 Loco Add-OnApp 65259 | DLC | May 10, 2012 | — | 400–1.2K† |
 Train Simulator: Settle Carlisle Specials Add-OnApp 65258 | DLC | May 3, 2012 | — | 280–840† |
 Railworks 3 Easter Rail Tour 2012App 65257 | DLC | — | — | — |
 Train Simulator: BR Class 423 ‘4VEP’ EMU Add-OnApp 65256 | DLC | May 17, 2012 | — | 260–780† |
 Train Simulator: Settle to Carlisle Route Add-onApp 65255 | DLC | Apr 5, 2012 | — | 980–2.9K† |
 Train Simulator: E18 Loco Add-OnApp 65254 | DLC | Apr 12, 2012 | — | 480–1.4K† |
 Train Simulator: South West Trains Class 444 EMU Add-OnApp 65253 | DLC | Mar 8, 2012 | — | 560–1.7K† |
 Train Simulator: Freightliner Class 70 Loco Add-OnApp 65252 | DLC | Mar 29, 2012 | — | 400–1.2K† |
 Railworks 3 AerosoftCommonApp 65251 | DLC | — | — | — |
 Train Simulator: BR Class 76 & 77 Loco Add-OnApp 65250 | DLC | Feb 23, 2012 | — | 280–840† |
 Train Simulator: DB Freight: 1970s Loco Add-OnApp 65249 | DLC | Mar 1, 2012 | — | 600–1.8K† |
 Railworks 3 Centennial Diesel PackApp 65248 | DLC | — | — | — |
 Train Simulator: PRR K4 Loco Add-OnApp 65247 | DLC | Feb 9, 2012 | — | 620–1.9K† |
 Train Simulator: Cologne-Dusseldorf Route Add-OnApp 65246 | DLC | Mar 8, 2012 | — | 1.4K–4.1K† |
 RailWorks 3 Intercity-ExpressApp 65245 | DLC | — | — | — |
 Train Simulator: Woodhead Route Add-OnApp 65244 | DLC | Jan 26, 2012 | — | 740–2.2K† |
 Train Simulator: Ohio Steel 2 Route Add-OnApp 65243 | DLC | Jan 12, 2012 | — | 280–840† |
 Train Simulator: PRR GG1 Loco Add-OnApp 65242 | DLC | Dec 9, 2011 | — | 360–1.1K† |
 Railworks 3 Class 325 Express MailApp 65241 | DLC | — | — | — |
 Railworks 3 Class 33 PackApp 65240 | DLC | — | — | — |
 Train Simulator: Donner Pass: Southern Pacific Route Add-OnApp 65239 | DLC | Dec 21, 2012 | — | 1.4K–4.3K† |
 Railworks 3 Class 50 PackApp 65238 | DLC | — | — | — |
 Railworks 3 Class 150 PackApp 65237 | DLC | — | — | — |
 Railworks 3 GWR King Pack DLCApp 65236 | DLC | — | — | — |
 Railworks 3 Trains Vs Zombies DLCApp 65235 | DLC | — | — | — |
 RailWorks 3 Super Express Train DLCApp 65234 | DLC | — | — | — |
 Train Simulator: Horseshoe Curve Route Add-OnApp 65233 | DLC | Sep 23, 2011 | — | 1K–3.1K† |
 Train Simulator: Northeast Corridor: New York - Philadelphia Route Add-OnApp 65232 | DLC | Jun 7, 2012 | — | 1.9K–5.7K† |
 Train Simulator: Amtrak Acela Express EMU Add-OnApp 65231 | DLC | Oct 13, 2011 | — | 1K–3K† |
 Railworks 2 P42DC GenesisApp 65230 | DLC | — | — | — |
 Train Simulator: Class 455 EMU Add-OnApp 65229 | DLC | Jul 28, 2011 | — | 500–1.5K† |
 Train Simulator: BR Class 421 '4CIG' LocoApp 65228 | DLC | Jul 19, 2011 | — | 280–840† |
