Where to change your BTD6 username

Your BTD6 username lives in your Ninja Kiwi account, not in the game itself. You cannot change it from inside the game — you have to log into your account on the Ninja Kiwi website, find the account settings page, and update it there. The change takes effect when ready across all Ninja Kiwi games you play, including BTD6, BTD Battles 2, and any others linked to that account.

If you play BTD6 without a Ninja Kiwi account (as a guest or through a platform account like Steam), you cannot change your username through Ninja Kiwi's system. You would need to either create a Ninja Kiwi account and link your game progress to it, or use the username change method specific to your platform — Steam has its own username system separate from BTD6.

Key Takeaways

  • Your BTD6 username is stored in your Ninja Kiwi account, not in the game, so you must change it on the Ninja Kiwi website.
  • Log into your account at ninjakiwi.com, go to Account Settings, and look for the username or profile name field to edit it.
  • The new username appears in BTD6 and all other Ninja Kiwi games within seconds of saving the change.
  • If you play through Steam, your Steam username is separate from your Ninja Kiwi username, and changing one does not change the other.

Step-by-step: changing your username on the Ninja Kiwi website

Go to ninjakiwi.com and log into your account using your email and password. If you do not remember your password, click "Forgot Password" on the login page and follow the email recovery steps.

Once you are logged in, look for your account menu — this is usually in the top right corner of the page, often showing your current username or a profile icon. Click it and select Account Settings or Profile Settings (the exact wording varies slightly depending on when your account was created).

On the Account Settings page, find the field labeled Username or Display Name. Click into it, delete your current username, and type your new one. Usernames in BTD6 can include letters, numbers, and underscores, but not spaces or special characters like hyphens or periods. Check that your new username is not already taken — the site will tell you if it is.

Click Save or Update at the bottom of the page. You should see a confirmation message. Close the settings page and launch BTD6 — your new username will appear in your profile and in multiplayer lobbies.

What happens if your desired username is already taken

Ninja Kiwi does not hold usernames in reserve. If the name you want is taken, it is in use by another account. You cannot claim it, and Ninja Kiwi support cannot force another player to change theirs so you can have it.

Your options are to choose a variation — adding numbers, underscores, or a short prefix or suffix — or pick a different name entirely. Many players add their year of birth, a number like 123, or an underscore before or after their preferred name. Test your new choice on the Account Settings page before saving to make sure it is available.

Changing your username if you play through Steam

If you bought BTD6 on Steam and play through your Steam account without linking a Ninja Kiwi account, your Steam username is what appears in the game. To change it, you change your Steam profile name, not anything in BTD6 itself.

Open Steam, click your profile picture in the top right, select Profile, then click the pencil icon next to your name. Type your new Steam name and click Save. This change appears in BTD6 and all other Steam games within seconds. Note that your Steam username is different from your Steam account name (which you cannot change) — the profile name is what other players see.

If you want to use a Ninja Kiwi account instead so your progress syncs across devices, you can link your Steam account to Ninja Kiwi. Go to Account Settings on ninjakiwi.com, find the "Connected Accounts" section, and follow the prompts to link Steam. After linking, you can change your username through Ninja Kiwi and it will show in BTD6 even when you play through Steam.

Linking your BTD6 progress to a Ninja Kiwi account

If you have been playing BTD6 as a guest or through a platform account and want to create a Ninja Kiwi account to manage your username, you can link your existing progress. Go to ninjakiwi.com and create a new account using an email address and password.

Once your account is created, open BTD6 and go to Settings (the gear icon on the main menu). Look for an option labeled Link Account, Connect Account, or Ninja Kiwi Account. Select it and log in with your new Ninja Kiwi credentials. Your game progress will transfer to the account, and you can now change your username through Ninja Kiwi's website as described above.

If you linked through a platform like Steam, the process is similar — go to Settings in BTD6, find the account linking option, and choose to link or connect your Ninja Kiwi account. Your progress stays with you.

Troubleshooting: your username did not change in the game

If you changed your username on the Ninja Kiwi website but it still shows the old name in BTD6, the most common cause is that the game has not refreshed. Close BTD6 completely and reopen it. If you are playing on a mobile device, force-close the app by swiping it away from your recent apps, then open it again.

If the old username persists after closing and reopening, log out of your Ninja Kiwi account within the game (go to Settings and look for a "Log Out" or "Disconnect Account" option), then log back in. This forces the game to fetch your current account information from Ninja Kiwi's servers.

If you are playing through Steam and changed your Steam profile name but it did not update in BTD6, restart Steam entirely — close it from the system tray, wait a few seconds, and reopen it. Then launch BTD6. If you linked a Ninja Kiwi account to Steam, make sure you changed the username in Ninja Kiwi, not just your Steam profile name.

Frequently Asked Questions

Can I change my username back to what it was before?

Yes. Ninja Kiwi does not lock you into a username or limit how often you can change it. You can change your username as many times as you want, including back to a previous one, as long as no one else has claimed it in the meantime.

Will changing my username affect my game progress or rank?

No. Your username is just a display name. Your rank, unlocked towers, completed maps, and all other progress stay exactly the same. Only the name that appears to other players changes.

What if I forgot my Ninja Kiwi password and cannot log into the website?

Go to ninjakiwi.com and click "Forgot Password" on the login page. Enter the email address associated with your account. Ninja Kiwi will send you a password reset link. Click the link in the email, create a new password, and log in. Then you can change your username as normal.

Can I have different usernames in BTD6 and other Ninja Kiwi games?

No. Your Ninja Kiwi username applies to all games linked to that account. If you change it, the new name appears in BTD6, BTD Battles 2, Bloons Pop, and any other Ninja Kiwi game you play on that account.

What characters can I use in my BTD6 username?

You can use letters (A–Z, both uppercase and lowercase), numbers (0–9), and underscores. You cannot use spaces, hyphens, periods, or other special characters. Ninja Kiwi will tell you if your chosen name contains invalid characters when you try to save it.