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.) |
|---|---|---|---|---|
 Gotham City Impostors Free to Play: Stitches App 216449 | DLC | Aug 30, 2012 | — | 20–60† |
 Gotham City Impostors Free to Play: Crocky App 216448 | DLC | Aug 30, 2012 | — | 180–540† |
 Gotham City Impostors Free to Play: Steampunk Costume App 216447 | DLC | Aug 30, 2012 | — | 20–60† |
 Gotham City Impostors Free to Play: Cowboy Costume App 216446 | DLC | Aug 30, 2012 | — | 20–60† |
 Gotham City Impostors Free to Play: Pirate Costume App 216445 | DLC | Aug 30, 2012 |
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.
| — |
| 20–60† |
 Gotham City Impostors Free to Play: Ninja Costume App 216444 | DLC | Aug 30, 2012 | — | 40–120† |
 Gotham City Impostors Free to Play: Luchador Costume App 216443 | DLC | Aug 30, 2012 | — | 100–300† |
 Gotham City Impostors Free to Play: Business Costume App 216442 | DLC | Aug 30, 2012 | — | 120–360† |
 Gotham City Impostors Free to Play: Dress-Up Pack App 216441 | DLC | Aug 30, 2012 | — | 220–660† |
 Gotham City Impostors Free to Play: Personality Pack App 216440 | DLC | Aug 30, 2012 | — | 100–300† |
 Gotham City Impostors Free to Play: Character Pack App 216439 | DLC | Aug 30, 2012 | — | 100–300† |
 Gotham City Impostors Free to Play: Gadget Pack - Ultimate App 216438 | DLC | Aug 30, 2012 | — | — |
 Gotham City Impostors Free to Play: Gadget Pack - Professional App 216437 | DLC | Aug 30, 2012 | — | 120–360† |
 Gotham City Impostors Free to Play: Gadget Pack - Starter App 216436 | DLC | Aug 30, 2012 | — | 140–420† |
 Gotham City Impostors Free to Play: Support Item Pack - Ultimate App 216435 | DLC | Aug 30, 2012 | — | — |
 Gotham City Impostors Free to Play: Support Item Pack - Professional App 216434 | DLC | Aug 30, 2012 | — | 100–300† |
 Gotham City Impostors Free to Play: Support Item Pack - Starter App 216433 | DLC | Aug 30, 2012 | — | 100–300† |
 Gotham City Impostors Free to Play: Weapon Pack - Ultimate App 216432 | DLC | Aug 30, 2012 | — | 40–120† |
 Gotham City Impostors Free to Play: Weapon Pack - Professional App 216431 | DLC | Aug 30, 2012 | — | 200–600† |
 Gotham City Impostors Free to Play: Weapon Pack - Starter App 216430 | DLC | Aug 30, 2012 | — | 220–660† |
 Hitman: Absolution - Sniper Challenge UnlockApp 216429 | DLC | — | — | — |
 Hitman: Absolution: Deus Ex (Adam Jensen) HandgunApp 216421 | DLC | — | — | 420–1.3K† |
 Hitman: Absolution: Deus Ex (Adam Jensen) DisguiseApp 216420 | DLC | — | — | 500–1.5K† |
 Hitman: Absolution: Public Enemy DisguiseApp 216419 | DLC | — | — | 380–1.1K† |
 Hitman: Absolution: High Roller DisguiseApp 216418 | DLC | — | — | 280–840† |
 Hitman: Absolution: High Tech DisguiseApp 216417 | DLC | — | — | 340–1K† |
 Hitman: Absolution: Bronson M1928 GunApp 216416 | DLC | — | — | 300–900† |
 Hitman: Absolution: Krugermeier 2-2 GunApp 216415 | DLC | — | — | 260–780† |
 Hitman: Absolution: Bartoli Custom GunApp 216414 | DLC | — | — | 420–1.3K† |
 Hitman: Absolution: Agency HX UMPApp 216413 | DLC | — | — | 320–960† |
 Hitman: Absolution: Agency SPS 12App 216412 | DLC | — | — | 320–960† |
 Hitman: Absolution: Agency Jagd P22GApp 216411 | DLC | — | — | 500–1.5K† |
 Sleeping Dogs: Law Enforcer PackApp 216335 | DLC | Feb 13, 2013 | — | 240–720† |
 Sleeping Dogs: Monkey King PackApp 216334 | DLC | Jan 29, 2013 | — | 160–480† |
 Sleeping Dogs: Wheels of FuryApp 216333 | DLC | Feb 26, 2013 | — | 440–1.3K† |
 Sleeping Dogs: Movie Masters PackApp 216332 | DLC | Jan 29, 2013 | — | 140–420† |
 Sleeping Dogs: Square Enix Character PackApp 216331 | DLC | — | — | 200–600† |
 AirMech® PrimeApp 216174 | DLC | Mar 21, 2013 | — | 360–1.1K† |
 AirMech® SoundtrackApp 216173 | DLC | Nov 13, 2012 | — | 280–840† |
 AirMech Strike PackApp 216172 | DLC | Oct 5, 2012 | — | 320–960† |
 AirMech Steam Beta BundleApp 216171 | DLC | — | — | — |
 AirMech Beta BundleApp 216170 | DLC | — | — | — |
 MapleStory Starter PackApp 216153 | DLC | — | — | — |
 MapleStory Value PackApp 216152 | DLC | — | — | — |
 Brawl Busters - Buster BundleApp 216010 | DLC | — | — | — |
 DC Universe Online Ultimate Edition BundleApp 215998 | DLC | — | — | — |
 DC Universe Online: Origin CrisisApp 215997 | DLC | — | — | — |
 DC Universe Online: Home TurfApp 215996 | DLC | — | — | — |
 DC Universe Online: The Last LaughApp 215995 | DLC | — | — | — |
 DC Universe Online: The Battle For EarthApp 215994 | DLC | — | — | — |
