This idea is honestly incredible, best take on the jam's theme, and while I was initially super impressed with this mechanic, it got annoying quite quickly
First of all, the hitboxes of the aspect ratio controls are very small, I managed to miss them so many times and lose because of that, and even worse is that sometimes the hitboxes disappear and I can't click on them
I think that responsiveness is especially important with your game's genre, and while the player was responsive, I can't say the same about the aspect ratio, which was the main mechanic to begin with. I think that if the game was slower paced I would've liked it a lot more
Still, the idea execution was exceptional and I have to give you credit for the level design and the feel of the game, which were pretty good, well done!