Steam organizes its storefront and user libraries using a structured database. In this system, an represents the core product.
Valve has also expanded AppIDs to cover (temporary AppIDs that recycle after tests end) and Steam Next Fest demos (ephemeral AppIDs).
But AppIDs are public information —sharing steam://rungameid/730 is harmless. Scammers sometimes use fake steam:// links to spoof game invites, so always verify the AppID matches the real game by checking SteamDB first. appid steam
AppIDs aren't just for games:
The AppID dictates what the software is, but the dictates how you own it. Steam organizes its storefront and user libraries using
| Purpose | Example Command/URL | |---------|----------------------| | Force install | steam://install/570 | | Force launch | steam://rungameid/220 | | Add non-Steam game shortcut with custom icon | Use AppID to fetch image assets | | Check price history | steamdb.info/app/730/ | | Find hidden Steam Labs experiments | AppIDs often leak before announcement | | Download workshop content | Workshop items have PublishedFileID , not AppID, but belong to an AppID |
Every game, demo, DLC, tool, video, and piece of software on Steam has a unique number. This number is called an —and it’s one of the most powerful tools in the Steam ecosystem, yet most users never notice it. appid steam
Use Steam Web API or SteamDB. Example with SteamDB:
When you install a game, Steam looks at the AppID to determine which Depots your operating system needs to download. This system allows developers to ship massive HD texture packs as optional Depots under the main AppID without forcing every user to download them.
For power users and server administrators, the AppID is essential for using the SteamCMD tool. This command-line interface is used to download server files or game builds automatically. A typical command looks like: steamcmd +login anonymous +app_update 740 validate +quit Here, AppID 740 specifically refers to the Counter-Strike 2 Dedicated Server, distinct from the client AppID (730).
| Type | Purpose | Example | |------|---------|---------| | | Identifies the software itself (game, DLC, tool) | 730 (CS2) | | SubID | Identifies a purchasable package (e.g., game + soundtrack) | 12345 | | PackageID | Another name for SubID (used interchangeably) | Same as SubID |