Every server needs a password. Ask for it on Discord before you start.
Join the DiscordChecking server status...
135.134.149.202:8777
135.134.149.202:8777.Astroneer needs the numbers, not a name. Unlike the other games here, its server list won't accept astroneer.lepin.ski - a hostname simply won't connect. Copy the address above exactly, port included. This page keeps that address current, so reload it rather than reusing an old copy.
If the list shows the server offline, try joining anyway. An empty Astroneer server answers status checks slowly enough that it often reads as offline while being perfectly joinable.
connect l4d.lepin.ski:27015
` (the backtick/tilde key, above Tab) to open it.connect l4d.lepin.ski:27015.
connect l4d2.lepin.ski:27016
` (the backtick/tilde key, above Tab) to open it.connect l4d2.lepin.ski:27016.Connect from the console rather than through the lobby or quickmatch browser. Password handling through the lobby path is unreliable in L4D2.
moria.lepin.ski:7777
moria.lepin.ski:7777.
valheim.lepin.ski:2456
valheim.lepin.ski:2456.valheim.lepin.ski:2457
valheim.lepin.ski:2457 and add it.That one ends in 2457, not 2456. Steam's server browser talks to the query port, which is the game port plus one - adding :2456 in Steam silently finds nothing.