Tools
Game server status
Check a Rust, Garry's Mod, CS2, ARK, Valheim or other Steam game server: online, map, players and more.
Most Steam games
Rust, Garry's Mod, Counter-Strike, Team Fortress 2, ARK, Valheim, DayZ, Unturned, 7 Days to Die and others that use Steam's server browser.
Which port?
Type the address you join with. If it doesn't answer, the one after it is tried too, since some games (Valheim) answer there.
Straight in
Join in Steam opens Steam and connects you to the server, if you own the game.