Nah, it's not that serious, and you don't need to submit in PDF format.
One of the things that I was going to include in my 'getting started' guide is that Google Drive is a wonderful way to make a tabletop RPG that's very sharable. You can actually export a Google Doc straight to a PDF.
Also if you're willing to do a little learning, the software suite that I'm using for my professionally made game just went COMPLETELY FREE, and it's very powerful.
