So i want to show an demo version of my Gamebook to my teacher but i dont want to be online ? Some ideas how to make it with an installer or something

As far as I know, you'd either have to log in to quest online or download the desktop version to the device your teacher will play on. Other than that, not sure if you can. Someone else may come along and tell you otherwise.

So when im ready with the Gamebook and i want to publish it i cant make an offline play mode ?

Again, unless I'm mistaken (which I might be), the file you publish is a .quest file which runs only with Quest. There may be a loophole somewhere, but I, being no expert, am unaware of one. Wait for someone who knows better to answer this definitively.

HardJ wrote:So when im ready with the Gamebook and i want to publish it i cant make an offline play mode ?

Yes. Just to make it clear, like Xan says, you will have to download the Quest application to play the game offline.