You usually can’t truly turn a Roblox private server into a public one ; most games only let you create a private server and then control who can join it through settings like allow joining, friends access, or invite links.

For JJK / Jujutsu Shenanigans

For JJK-style Roblox games, the common setup is:

  1. Open the game page.
  2. Go to the Servers tab.
  3. Find your private server and open Configure or the three-dot menu.
  4. Turn on allow joining or friends allowed.
  5. Add specific usernames or share the server link if the game supports it.

Important limitation

If the game itself does not support public servers for player-made instances, there is no real “make it public” switch. In that case, the closest option is making it joinable by friends or anyone with the invite link, depending on the game’s rules.

Quick note

If you meant a non-Roblox JJK private server , the answer depends on the platform, but the usual steps are still port forwarding, server config, and firewall setup rather than a simple public/private toggle.

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