SteamID follows "STEAM_X:Y:Z" format, where X represents universe and Y is account ID. Steam3 ID format uses "[letter:1:W]" for player identification. Computer programs use 64-bit structure with Y as lowest bit
Gamertags can be changed through web browser using Microsoft account. Maximum 12 characters including spaces allowed. First change is free, subsequent changes cost $10. New tags must follow specific rules and display preview
Access Friends through username menu in Steam app or website. Enter friend code or search for user to add. Friend requests require purchase or Steam Wallet funds. Profile names can be changed at any time
PS5 allows creating permanent accounts through 'Get Started' option. Users can sign in temporarily or create anonymous Quick Play accounts. Offline accounts can be created with custom icons and usernames. Child accounts require parental controls setup in settings
Epic Games allows only one account per email address. Different logins needed for Switch and PlayStation accounts
PS5 users can create accounts through "Add User" and "Get Started". PS4 users can create accounts through "New User" option. Website users can create accounts through "Create New Account"