: Open File Explorer, go to the View tab, and check File name extensions . Rename the file : Right-click your .zip file and select Rename . Change the extension from .zip to .sb3 .

In a quiet valley where the internet never reached, old Elara tended the Last Library—a dome of stone and glass filled with paper books. One day, a dusty drone landed at her door. Inside: a single scratched disc labeled SCRATCH 3 PROJECTS – SB3 FILES .