I had a fun experience with this, but some aspects were entertaining for the wrong reasons (I managed to fall off the map three times and ended up outside the level, when I opened the dev console it was full of "Index out of bounds" errors and Marisa kept spinning in random directions when moving around).
The writing was the best part in my opinion, the music was nice and fitting and I liked the paper mario artstyle. I'm not sure if it really needed 3D visuals and physics, I think they got a bit in the way of the game.
Also, a way to quit the game would be nice. I didn't find one and I'd prefer that over graphics settings.