First of all it is to obvious that this is made in Scratch. Secondly, I am also a Scratcher and I also have created something like that in Scratch, the link is :-https://rohaanbeyonditch.itch.io/windows-10-simulator . Thirdly, add more features to make it good like adding a simple text engine and last of all, follow me on Scratch pls... pls... link :- https://scratch.mit.edu/users/RohaantheScratcher/