Does invisible text work in game usernames?
Yes, in the in-game name field on most games, and never in a console account ID. A game stores your in-game name separately from the platform account it sits on, and the two are validated by different systems with different rules.
The in-game name is validated by the game publisher. Free Fire, PUBG Mobile, Steam and six other platforms accept at least one invisible character in that field. The console account ID is validated by Sony or Microsoft against a strict allowlist, and no invisible character passes it.
Why gaming name fields are stricter than social profiles
Gaming name fields validate against a character allowlist, and social profiles validate against a length check. An allowlist rejects anything it does not recognise, so a character that works on Instagram can fail in a game that has never heard of it.
Name fields validate against a character allowlist
A social display name usually accepts any character that is not empty after trimming. A gaming name field commonly permits letters and digits and rejects everything else, because publishers restrict names that break scoreboard rendering or enable impersonation.
This is why U+3164 Hangul Filler outperforms every space character in games. Unicode classifies U+3164 in General Category Lo — Letter, other. An allowlist that permits letters permits it. A space character sits in category Zs, which the same allowlist rejects, and which trim() removes before the check even runs.
Rename tokens make failure expensive
Free Fire, Mobile Legends and Call of Duty Mobile consume a rename card when you submit the request, not when it succeeds. A rejected name costs the card anyway.
To test without spending one, paste the character into the game's chat or player-search field first. A client that renders it as blank there will usually accept it in the name field, if the server allows the category.
Choose your platform
Pick your game below — each one accepts a different character. Each guide covers one game: the character it accepts, its character limit, the exact steps, and what to do when the name reverts.