AppID

Each Steam game has a Steam AppID which can be used when Setting Steam Launch Options to automatically start the game when loading Steam.

Here is a list of AppID's used to start several popular Steam games:

• 10 - Counter-Strike
• 20 - Team Fortress Classic
• 30 - Day of Defeat
• 40 - Deathmatch Classic
• 70 - Half-Life
• 80 - Counter-Strike: Condition Zero
• 240 - Counter-Strike: Source
• 300 - Day of Defeat: Source
• 320 - Half-Life 2: Deathmatch
• 360 - Half-Life Deathmatch: Source
• 2400 - The Ship