• Download "dxwnd" from http://sourceforge.net/projects/dxwnd/ unpack it and start dxwnd.exe

• Right-click on the white space in dxwnd and select "Add". Make sure "Path:" links to the PrinceofPersia_Launcher.exe; after selecting that .exe the path should look like that C:\Program Files (x86)\Steam\Steamapps\common\Prince of Persia\PrinceofPersia_Launcher.EXE, this obviously differs if you play the GOG version or if you installed the game somewhere else. Similarly, make sure "Launch:" points to the same EXE. Picture of dxwnd for reference:

• Set your window size at the bottom, e.g. 1280x720. This should be the same as your resolution in the game config (see below).

• If you don't want a dxwnd banner to appear every time you launch the game, tick "No banner". You can keep the rest of the settings as default.

• Go to the Video tab and under Screen resolution select HD (16:9) if you are playing the game in a 16:9 ratio (e.g. 1280/720 = 16/9 = 1.78)

• Go to the Mouse tab and turn mouse clipper off

• Click "Ok"
• Now start the game through dxwnd or through Steam. The game should now open in a window.

P.S. If the game still starts in fullscreen, the universal fix is to launch dxwnd as admin.

[edited by Smath on 25/07/2024]