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.) |
|---|---|---|---|---|
 Half-Life: SourceApp 280 | Game | Jun 1, 2004 | 15 | 2M–5M |
 Counter-Strike: SourceApp 240 | Game | Nov 1, 2004 | 1,556 | 10M–20M |
 Half-Life 2App 220 | Game | Nov 16, 2004 | 1,043 | 10M–20M |
 Half-Life 2: DemoApp 219 | Demo | Dec 1, 2004 | 15 | 3K–8.9K† |
 Source SDK Base 2007App 218 | Tool | — | 9,613 | — |
 |
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.
| Tool |
| — |
| 3 |
| — |
 Source SDKApp 211 | Tool | — | 82 | — |
 Source Dedicated ServerApp 210 | Game | — | 0 | — |
 Source Dedicated ServerApp 205 | Tool | — | 0 | — |
 Half-Life: Blue ShiftApp 130 | Game | Jun 1, 2001 | 39 | 1M–2M |
 Natural SelectionApp 120 | Game | — | 0 | — |
 Counter-Strike: Condition Zero Deleted ScenesApp 100 | Game | — | 22 | 10M–20M |
 Codename GordonApp 92 | Advertising | May 1, 2004 | 24 | 17.7K–53.2K† |
 Half-Life Dedicated ServerApp 90 | Tool | — | 0 | — |
 Counter-Strike: Condition ZeroApp 80 | Game | Mar 1, 2004 | 227 | 5M–10M |
 Half-LifeApp 70 | Game | Nov 19, 1998 | 641 | 10M–20M |
 RicochetApp 60 | Game | Nov 1, 2000 | 4 | 200K–500K |
 Half-Life: Opposing ForceApp 50 | Game | Nov 1, 1999 | 76 | 2M–5M |
 Deathmatch ClassicApp 40 | Game | Jun 1, 2001 | 3 | 5M–10M |
 Day of DefeatApp 30 | Game | May 1, 2003 | 89 | 5M–10M |
 Team Fortress ClassicApp 20 | Game | Apr 1, 1999 | 73 | 1M–2M |
 Counter-StrikeApp 10 | Game | Nov 1, 2000 | 6,098 | 10M–20M |
 winui2App 8 | Config | — | — | — |
 Steam ClientApp 7 | Config | — | — | — |
