Windows 1339

Windows 1339 is a Windows operating system and the successor to Windows 1337.

It is the main focus of Windows 1337 2, and has many more apps than its predecessor, such as Discordville and Fandomtown.

History
It was created by Mark T. Gussiberg and Mark. T. Gussiberg (NES) after the former got stuck inside it and had to contact his doppelganger for help.

Although mostly destroyed, Discordville is currently near NES City, and the Mirror app still remains inside the software, trapping Foury Frit, Evloresnit Meard, and Skeeter the Mosquito until they are able to be taken out by Team InstAnt.