This is a neat experiment! I purchased it after seeing it on Indie Games Plus because the concept is similar to an idea I've been toying with recently. I like seeing RPG Maker getting used for something a little outside the mold.
I'm gonna put a few notes here. This seems like more of a prototype or proof of concept so I don't know if you plan on updating or returning to it in the future but, seeing as you're selling it, I figure it's worth providing some feedback:- The image that I think is meant to pop up eventually after you power down the system doesn't seem to be working properly.
- I realize that glitches and technical issues are part of the gimmick but I think that the ______.ogg is confusing as the audio is intentionally glitched and distorted but it's the one sound effect that shouldn't be affected by the game cartridge. It definitely made me feel like there was something wrong with the game but in a way that more made me think that the RPG maker export was bad. I think isolating the glitches (at least in the beginning so later you can subvert expectations) to within the game itself (not the off screen) would help convey the idea that the cartridge itself is making things happen.
- You should delete the unused RTP files before exporting RPG Maker games. They bloat the file size unnecessarily. Half the download size is just unused stock RPG Maker music, battlebacks, sprite sheets, etc. (MV should really add a setting to make a new game without copying all of the RTP stuff).
- I don't subscribe to the idea that length should correspond to price but it might be worthwhile to mention that when you say short with this game it is very short.
Anyway, thanks for sharing this. I hope my comments didn't discourage you because I think this is a cool project and that you could expand an idea like this a lot if you wanted to. I'd like to see more from you in the future!