From your Pack, click on your name or profile picture to bring up the Manage Profile box:
You can also access the Manage Profile box by clicking on the gear in the top right corner of the screen:
The box below will pop up, allowing you to edit various fields:
Your profile defaults to your current Facebook picture; you can keep this, or select one of the Rat avatars.
Your Screen Name must be unique, include at least one letter or underscore, and be at least 3 characters long (max 36 characters). Profanity and vulgarity are not allowed.
The status message is visible to anyone who visits your Pack or Vault, and must also not contain any profanity, vulgarity, or attempts to attack other players.
Players can select one of two social play styles:
1.) Cooperative (Co-op): No one (except Rats) can steal from you, and you can't steal from anyone else, even if they're designated as FFA. The only exception is if you've been given steal permission by another player, which is discussed in "Manage Friends."
2.) Free For All (FFA): Allows you to steal cards from all other FFA players, and they are allowed to steal cards from you. Do NOT set your play style to FFA if you have any qualms with strangers stealing any of your unlocked cards--it's up to you to manage which cards are safe!
The default play style for all players is Cooperative. To change, click the dropdown menu.
Note: If you select FFA, there is a 7-day waiting period until you are allowed to switch back to Co-op. This is to prevent players from selecting FFA, stealing, and then switching back, which blocks others from stealing from them.