Change your Factorio username through the account settings on the Factorio website

Factorio stores your username on the official Factorio website, not inside the game itself. To change it, you log into your account at factorio.com, go to your profile settings, and update the name there. The change takes effect when ready for multiplayer games and the Factorio forums. Your single-player save files keep their old character names — changing your account username does not rename characters you have already created in offline games.

You can change your username once every 30 days. If you have changed it recently and want to change it again, you will need to wait until the 30-day window has passed. Factorio does not allow usernames shorter than 3 characters or longer than 20 characters, and the name must contain only letters, numbers, hyphens, and underscores.

Key Takeaways

  • Log into your account at factorio.com and navigate to your profile settings to find the username field.
  • Factorio allows one username change every 30 days, so plan ahead if you want to change it again soon.
  • Your new username appears when ready in multiplayer games and on the forums, but does not change the names of characters in single-player saves.
  • Usernames must be between 3 and 20 characters and can only use letters, numbers, hyphens, and underscores.

Step-by-step: updating your username on Factorio.com

Start by opening a web browser and going to factorio.com. Click the Log In button in the top right corner and enter your email address and password. Once you are logged in, click on your username or profile icon in the top right corner to open the account menu.

Select Profile or Settings from the dropdown menu. Look for a section labeled Username or Account Name. Click the edit or pencil icon next to your current username. Type your new username into the field, making sure it follows the rules: 3 to 20 characters, letters, numbers, hyphens, and underscores only. Click Save or Confirm to explore the change.

What happens to your old username after the change

Once you change your username, the old name becomes available for other players to use after a short delay. Your account itself does not disappear — all your saves, achievements, and multiplayer history stay attached to your account. Other players will see your new name in any new multiplayer games you join or forums posts you make going forward.

If you were part of a multiplayer game with friends before the change, they will see your new username the next time you log in. Old chat messages or forum posts you made under your previous name will still show that old name in the history, but your profile page and current games will display only your new username.

Single-player games and character names

Changing your account username does not rename the character in any single-player save files you have already started. If you created a character named "Alice" in a single-player world before changing your account username, that character will still be called "Alice" in that save. The account username change only affects multiplayer games and your public profile on the Factorio website.

If you want a new character name for a fresh single-player game, you can create a new save and give the character whatever name you want when you start it. There is no connection between your account username and the names you give to individual game characters.

Troubleshooting: username change did not go through

If you clicked save but the username did not change, refresh the page and log in again to check whether the change actually went through. Sometimes the page does not update when ready even though the change was saved on the server. If the old username is still showing after a refresh and a new login, the change may have failed due to a technical issue.

If you see an error message saying the username is already taken, another player has claimed it in the time between when you chose it and when you submitted the form. Pick a different name and try again. If you see an error about the 30-day waiting period, you have already changed your username recently and must wait until the window expires before changing it again.

Frequently Asked Questions

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

Yes, but you must wait 30 days after your last change. Once the waiting period is over, you can change your username to anything available, including a previous name you used. The 30-day rule applies to every change, not just changes to new names.

What if someone else took my old username?

Once you change your username, the old one becomes available for other players to claim. If someone else takes it before you change your mind, you cannot get it back unless they stop using it and it becomes available again. Choose a new username you are happy with before you make the change.

Do I need to change my password when I change my username?

No. Your password stays the same. You log in with your email address and password, not your username, so changing the username does not affect how you access your account.

Will my friends see the username change in multiplayer games we are already playing?

Yes. The next time you log into a multiplayer game, your new username will appear to all other players in that game. They will see the change the moment you rejoin or start a new multiplayer session.