“Run on server” in JJS usually means the action runs the script or effect on the server side , not just on your own client. In practice, that means the result can affect everyone in the session instead of only you.

What it does

  • Executes the command or script on the game/server host rather than locally on your device.
  • Lets the effect be visible or applied to other players, depending on how JJS handles that feature.
  • It is often used for shared gameplay effects, testing, or server-side behavior in modding/community contexts.

Simple example

If a visual or ability is set to “run on server,” it may spawn or trigger for the whole server instead of being a private client-only effect. That’s why people usually treat it as the setting that makes an action global rather than personal.

Important note

I can explain the exact meaning better if you mean a specific JJS game, script, or menu option, because “run on server” can vary a bit by context.