NBA All-World currently requires a Google account to play. If you are using any provider other than Google (Gmail), don't worry- you can still use your existing email to create a Google account.

Here's how to create a Google account without changing your email:
  1. Create account
  2. Enter your name
  3. Select Use my current email address instead
  4. Enter your existing non-Google email address
  5. Verify your email address by following the instructions provided