Where to change your BTD6 username

Your Bloons TD 6 username is tied to your Ninja Kiwi account, not to the game itself. That means you change it through the Ninja Kiwi website, not inside the game. Go to ninjakiwi.com, sign in with your account, and look for account settings or profile settings — the exact location shifts slightly between updates, but it's always in the same general area where you manage your account details.

Once you're in your account settings, you'll see a field for your username. Type in the new name you want, save the change, and it updates across all Ninja Kiwi games, including BTD6. The change takes effect when ready, though it may take a few minutes to show up in-game if you're already playing.

If you're playing BTD6 on console (Nintendo Switch, PlayStation, or Xbox), you still change your Ninja Kiwi username through the website — the console version doesn't have a separate username system. Your console account is linked to your Ninja Kiwi account, so the change syncs automatically.

Key Takeaways

  • Your BTD6 username lives on the Ninja Kiwi website, not in the game itself, so you must sign in at ninjakiwi.com to change it.
  • The change takes effect when ready across all Ninja Kiwi games and shows up in BTD6 within a few minutes.
  • Console players (Switch, PlayStation, Xbox) change their username the same way — through the Ninja Kiwi website after linking their console account.
  • You cannot change your username more than once every 30 days, so choose carefully before you save.

Username rules and restrictions

Ninja Kiwi has a few rules about what your username can be. It must be between 3 and 20 characters long, and it can only contain letters, numbers, hyphens, and underscores. Spaces are not allowed. The system will reject names that are already taken, offensive, or that impersonate Ninja Kiwi staff or well-known players.

Once you change your username, you have to wait 30 days before you can change it again. This is a hard limit — there's no way around it. If you make a mistake or change your mind when ready, you're stuck with the new name for a month, so double-check the spelling and capitalization before you hit save.

What happens to your old username

When you change your username, your old name becomes available for someone else to use after a short delay. Your account itself doesn't disappear — all your progress, towers, maps, and cosmetics stay with you. Friends who had you added under your old username will still see you in their friends list, but your name will update to the new one.

If you were in a co-op game with someone when you changed your name, they'll see the new name the next time they load the game or refresh their friends list. There's no notification sent to them, so if you change your name unexpectedly, they might be confused for a moment.

Troubleshooting: the change won't save

If you try to change your username and get an error message, the most common reasons are: the name is already taken, the name contains characters that aren't allowed, the name is too short or too long, or you've already changed it within the last 30 days. The error message usually tells you which one it is.

If the error message is unclear, try logging out of the Ninja Kiwi website completely, closing your browser, and logging back in. Sometimes a stale session prevents the change from going through. If you still can't save after that, the username is likely already claimed by someone else — try a different name.

If you're playing on console and the change isn't showing up in BTD6 after 10 minutes, restart the game. The console version sometimes needs a full reload to pull the updated username from the Ninja Kiwi servers.

Changing your username on mobile vs. desktop

The process is the same whether you're on your phone or a computer — you go to ninjakiwi.com, sign in, and change your username in account settings. The website works on both, though the mobile version may have a slightly different layout. If you're having trouble finding the settings on mobile, look for a menu icon (usually three horizontal lines) in the top corner.

You don't change your username inside the BTD6 app itself on iOS or Android. The app pulls your username from your Ninja Kiwi account, so the website is always where you make the change. After you save it on the website, close and reopen the BTD6 app to see the new name.

If you forgot your Ninja Kiwi password

You can't change your BTD6 username without signing into your Ninja Kiwi account. If you've forgotten your password, go to ninjakiwi.com and click the "Forgot Password" link on the sign-in page. Enter the email address tied to your account, and Ninja Kiwi will send you a reset link. Click the link in the email, create a new password, and then sign in to change your username.

If you don't remember which email address you used, or if you no longer have access to that email, contact Ninja Kiwi support through their website. They can help you recover your account, though it may take a day or two.

Frequently Asked Questions

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

Not when ready. You have to wait 30 days after your most recent change. After that, if no one else has claimed your old username, you can change back to it. If someone else took it, you'll have to choose a different name.

Will my friends still see me if I change my username?

Yes. Your friends list doesn't break when you change your name. They'll see your new username the next time they load the game or refresh their friends list. Your account is the same — only the display name changes.

Can I use special characters or emojis in my username?

No. Ninja Kiwi only allows letters, numbers, hyphens, and underscores. Spaces, periods, and emojis will be rejected when you try to save.

Does changing my username affect my rank or leaderboard position?

No. Your rank, wins, and leaderboard standing stay exactly the same. The change is purely cosmetic — it only affects how your name appears to other players.

What if someone else is using the username I want?

You'll get an error message saying the name is taken. Try a variation — add a number, a hyphen, or an underscore. If the name you want is very popular, it's probably already claimed and you'll need to pick something else.