As described by the Emperor of Windowsia, the flag is supposed to be a dark blue background, a white stripe with a black stripe intersecting. Inn the middle is a black and white circle with the windows 11 logo.
The blue was supposed to represent him along with the first prime minster, Windows 11. White is supposed to represent Korean 12/Soft Midi Player and Black is supposed to represent everyone else. The circle stands for Unity between all peoples of Windowsia and the Windows 11 logo is supposed to specifically represent Windows 11. The flag was made on July 13, 2024 and adopted the very next day.