Hi
Think this will be very easy...
As far as I understand the tutorial the room resolution should change too, if I
change the game resolution to 1024/768 but it does't.
I did't find a a way to change it by myself either.
Sry totally beginner, but I hope at last that will change soon. ;)
Xen
Room size and game resolution are two different things.
The size shown in the room properties is the size of the imported background, and it's supposed to be the same as the game's resolution, or bigger, if you want the background to scroll.
Also, when importing a room background, make sure you don't by accident import a second background animation frame. Select the main/topmost background from the dropdown menu, then click the button next to it.