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.) |
|---|---|---|---|---|
 Multiwinia DemoApp 1540 | Demo | Sep 19, 2008 | 0 | 80–240† |
 DEFCON Beta DemoApp 1523 | Demo | — | 0 | — |
 DEFCON DemoApp 1522 | Demo | Sep 29, 2006 | 2 | 1.2K–3.7K† |
 Darwinia DemoApp 1502 | Demo | Jul 14, 2005 | 0 | 40–120† |
 SiN Episodes: Emergence GermanApp 1306 | Demo | — | 0 | — |
 |
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.
| Demo |
| Oct 12, 2005 |
| 0 |
| 40–120† |
 Portal: First SliceApp 410 | Demo | May 8, 2008 | 4 | 4.4K–13.1K† |
 Half-Life 2: DemoApp 219 | Demo | Dec 1, 2004 | 10 | 3K–8.9K† |
