Windows XT

Windows XT is a million version of Windows XP. It was released on August 08, 2000001. It has features and references from Windows XP, but with new functions, and mixed with new features. It also bring back Luna theme from Windows XP, and it is the main desktop theme, arranged like Windows 10 and in a new design.

Sounds: https://scratch.mit.edu/projects/254224671/ (U5 and newer)