Thanks for the thoughts Daniel! I didn't even consider the download size! must be the cutscenes! I've added your game to my list.
Thanks! If you have any trouble with the size of your project in the future, a good avenue of finding out what part of your project is taking up so much space is to generate a build report. Typically though a good place to start is sound and textures. Since your game has really good sound design I would guess that's probably where 70 - 90% of the space is going.