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Username Guidelines

The 3rb.io username guidelines are guidelines that cannot be changed or modified. They are a basic condition for creating your username.

Guidelines​

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Permitted characters for new usernames:

Customize how the game looks and feels with various visual settings. You can toggle options like:

  • Latin characters (a-z)
  • Numbers (0-9)
  • Show Wearables
  • Certain special characters
  1. Underscore ( _ )
  2. Period ( . )
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Restrictions for new usernames:

  • Must be 2 to 20 characters in length.

  • Only lowercase letters (a–z), digits (0–9), underscore (_), and period (.) are allowed.

  • Cannot use any other special characters besides (_) and (.)

  • No consecutive periods are allowed—for example, a..b is invalid, but .a.b. or a.b is fine.

  • Case-insensitive, forced to lowercase.

  • Must be unique across 3rb.io—no two users can share the same username.

  • No hateful, harassing, or sexually explicit content.

  • Usernames (and Nicknames) must adhere to our Community Guidelines.