All objects are invisible I was working on a game, but when I play it, all objects are invisible. It turns out, they all have the invisible property in the physics tab enabled. I don't know when it happened, and there's a lot of objects so turning them all visible again would be a nightmare.

Is there a way to do it to make all objects visible again?
There is an incredibly easy way to do this using the outliner. All objects with the  "invisible" property enabled will have the render icon faded out. Instead of selecting all your objects and manually turning off "invisible" on all of them, you can simple click the render icon in the outliner to re-enable visibility.