What is the Steam APP ID?

Hi Guys,
I want a server for CSGO GTA 5 and and


Can you help me?
I'm looking for the APP ID

The new ranked system is kinda weird. I could be challenger in one role and iron 4 in another.

Do you mean all AppID's? If yes try to google this: Steam AppID. Then there is a site named: Steam Database. But if you only need the AppID for CSGO and GTA V here you go: CSGO: 730 | GTAV: 271590