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.) |
|---|---|---|---|---|
 Defense Grid: The Awakening - Community LevelsApp 18534 | DLC | — | — | — |
 Defense Grid: Resurgence Map Pack 4App 18533 | DLC | — | — | — |
 Defense Grid: Resurgence Map Pack 3App 18532 | DLC | — | — | — |
 Defense Grid: Resurgence Map Pack 2App 18531 | DLC | — | — | — |
 Defense Grid: Resurgence Map Pack 1App 18530 | DLC | — | — | — |
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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 |
| Jan 23, 2013 |
| — |
| 420–1.3K† |
 Defense Grid: The Awakening - You Monster DLCApp 18522 | DLC | Dec 7, 2011 | — | 900–2.7K† |
 Defense Grid: Resurgence Map Pack 4App 18521 | DLC | Jun 23, 2010 | — | 280–840† |
 Defense Grid: Resurgence Map Pack 3App 18520 | DLC | Jun 16, 2010 | — | 260–780† |
 Defense Grid: The Awakening DemoApp 18510 | Demo | Jan 14, 2009 | 0 | 180–540† |
 Defense Grid: Resurgence Map Pack 2App 18509 | DLC | Jun 9, 2010 | — | 260–780† |
 Defense Grid: Resurgence Map Pack 1App 18508 | DLC | Jun 2, 2010 | — | 360–1.1K† |
 Defense Grid: Borderlands DLCApp 18507 | DLC | — | — | — |
 Defense Grid: The AwakeningApp 18500 | Game | Dec 8, 2008 | 28 | 500K–1M |
 The Whispered WorldApp 18490 | Game | — | 0 | — |
 Mata HariApp 18480 | Game | Jul 29, 2009 | 0 | 50K–100K |
 HelldoradoApp 18470 | Game | Apr 30, 2009 | 0 | 50K–100K |
 Crazy Machines 1.5 Inventors Training CampApp 18460 | Game | — | 0 | 50K–100K |
 Crazy Machines 1.5 New from the LabApp 18450 | Game | — | 0 | 50K–100K |
 Crazy Machines 2: Back to the Shop Add-OnApp 18440 | DLC | Dec 12, 2008 | 0 | — |
 Crazy Machines 1.5App 18430 | Game | Dec 12, 2008 | 0 | 0–20K |
 Crazy MachinesApp 18420 | Game | Dec 12, 2008 | 0 | 50K–100K |
 Crazy Machines 2: Time Travel Add-OnApp 18408 | DLC | Mar 11, 2011 | — | 40–120† |
 Crazy Machines 2: Liquid Force Add-onApp 18407 | DLC | Oct 15, 2009 | — | 120–360† |
 Crazy Machines 2: Back to the Shop Add-OnApp 18403 | DLC | — | — | — |
 Crazy Machines 2App 18400 | Game | Jun 20, 2008 | 1 | 100K–200K |
 Spectraball - DemoApp 18310 | Demo | — | 0 | 0–20K |
 SpectraballApp 18300 | Game | Oct 20, 2008 | 0 | 200K–500K |
 Unstoppable GorgApp 18120 | Game | Jan 19, 2012 | 0 | 50K–100K |
 Shattered Horizon Pre-orderApp 18119 | Game | — | 0 | — |
 Shattered Horizon Dedicated ServerApp 18112 | Tool | — | 0 | — |
 Shattered HorizonApp 18110 | Game | Nov 4, 2009 | 0 | 100K–200K |
 Shattered Horizon: ArconautsApp 18100 | Game | — | 0 | — |
 TheBaconing-DLC-MacApp 18081 | DLC | — | — | — |
 The Baconing DLC - Roesha – One Bad Mutha Co-op CharacterApp 18080 | DLC | Oct 11, 2011 | — | 60–180† |
 The BaconingApp 18070 | Game | Aug 31, 2011 | 1 | 50K–100K |
 DLC: Tankko the WarriorApp 18061 | DLC | — | — | — |
 DLC: The Snowy Mountain DungeonApp 18060 | DLC | — | — | — |
 Deathspank: Thongs of VirtueApp 18059 | Game | — | 0 | — |
 DeathSpankTOV-DLCPack2App 18053 | DLC | — | — | — |
 DeathSpankTOV-DLCPack1App 18052 | DLC | — | — | — |
 DeathSpank: Thongs of VirtueApp 18050 | Game | Nov 30, 2010 | 1 | 50K–100K |
 DeathSpankApp 18049 | Game | — | 0 | — |
| DeathSpankApp 18040 | Game | Oct 26, 2010 | 4 | 100K–200K |
 Precipice of Darkness, Episode Two DemoApp 18030 | Demo | Nov 7, 2008 | 0 | 120–360† |
 Precipice of Darkness, Episode TwoApp 18020 | Game | Nov 7, 2008 | 0 | 50K–100K |
 Precipice of Darkness, Episode One DemoApp 18010 | Demo | Jun 11, 2008 | 0 | 140–420† |
 Precipice of Darkness, Episode OneApp 18000 | Game | — | 0 | 100K–200K |
 SpellForce 2 - Dragon StormApp 17810 | Advertising | Jul 7, 2008 | 0 | — |
 SpellForce 2 - Shadow WarsApp 17800 | Advertising | Jul 7, 2008 | 0 | 20–60† |
