The game settings to apply on join. These are a list of convars.

The map to start with. It's really up to the game to use this

Preferred max players for multiplayer games. Used by games, but not enforced.

Privacy for lobbies created on game start. The more private of this and the lobby's own config wins, so neither the menu nor the game can open up a lobby the other made private. If not explicitly set, lobbies use their own config.

The hostname for the server.