An Operating System emulator!
Don't forget to download this and play it in presentation mode because that is the only way it will work.
P.S. It has a game in it!
http://scratch.mit.edu/projects/Colkadome/258824
It works JUST like a normal computer so you can drag windows using their top bar, you can double click files to open them, you can drag files by clicking and holding them and e.t.c.
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It's a pretty good OS, maybe add a feature that you can open more than one program
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