You can't, unless you use an outside encryption program.
So then how would someone who doesn't have RMMV get to play my demo, would they just have to download all the files for the project stuff as well and just open the exe?
Nope. File -> Deployment. Post what it creates from there.
You can use Engima Virtual Box. Most people wouldn't know how to or care to get the files from the package.
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