A free app for Windows, by BUDA20.

The Fake Fullscreen Mode Windowed – Alt Tab Fix is an add-on for the game and it is intended to be used with most versions. If you are playing the game, you can find the menu in the game menu, and you can choose to play in fullscreen mode.

How to use it?

It is very simple to use this add-on. All you need to do is to press the Alt key and the Tab key at the same time, and you can now access the fullscreen mode. You can also configure it to send a screenshot to the clipboard.