In project settings>resolution and presentation, You can set the width and height to 1920x1080. You can also have the supported aspect ratio set at only 16:9. However, in UWP, you don't have that. There is a default is full screen. Now here's the thing, if someone uses UWP and runs a game not in 16:9, then the outsides (left and right side of monitor) get cut off. Uploading to the Microsoft store and all of my games get rejected. All of the other OSes you can set it to 16:9, but not UWP in unity. So I was wondering how to fix this. The obvious guy would say make all of the games 4:3 aspect ratio. That might be a solution when starting out, but not after having everything done. Is there a way with UWP to force a 16:9 aspect ratio like windows EXE? or maybe force a window mode or something? The options just are not there in unity for UWP. In the unity manual file:///C:/Program%20Files/UnityInstalls/2019.2.8f1/Editor/Data/Documentation/en/Manual/class-PlayerSettingsWSA.html It says this but that is not an option. Default is Fullscreen Set the window to the full-screen native resolution of the display. Unity renders app content at the resolution set by script (or by user selection when the built application launches), but scales it to fill the window. When scaling, Unity adds black bars to the rendered output to match the aspect ratio The relationship of an image’s proportional dimensions, such as its width and height. See in Glossary chosen in the Player settings, so that the content isn’t stretched. This process is called letterboxing.