If you’re a Roblox player who meets both of these requirements, you’ll be eligible to start calling your Roblox friends using the newly added Roblox Connect feature.

The last way to join a specific Roblox game is if players have friends playing in that server. They are able to join any friend's game if they have the "Join In-game" setting enabled.

A person who has been blocked won't be able to get in touch with you, send you friend requests, or join your game. This might be helpful if you encounter someone misbehaving or making you feel uneasy.