Not Able To Play 'Unturned' Game In Full Screen

Hello fellow gamers. I recently downloaded ‘Unturned’ Game from Steam, but not able to play it in full screen. Does anyone have any idea what could be the issue behind it? Do I need to change or tweak anything to solve the issue? Kindly help me to solve this issue.

What exactly do you mean by that?

After posting here, I searched online. One solution from this article helped me to solve the issue. I simply changed the Compatibility Mode and the issue got resolved. Now I can play games on full screen.