Thank you! It was indeed a pretty fun coding adventure, especially figuring out how to project stuff from the Möbius strip surface into 3D space (though I later realized that I could have just found the formulas on the wikipedia page, but what would have been the fun in that?)
I see your point about the game having a very horizontal bias. So far, I pretty much considered that to simply be a feature of this particular geometry, but I think I underestimated the game's difficulty and I agree that horizontal movement doesn't really get very intersting until you've eaten about 15-20 food. One reason I chose this particular width/height ratio (apart from the fact that my code is very unoptimized and I was scared I'd overwhelm my toaster of a computer if I made the grid much bigger) was that the center position is roughly squarish when the whole strip is on screen, but I guess it would be possible to add vertical scrolling to keep that in place.
I'm honestly not sure if I intend to make any major changes like that to the game after the jam, though. I feel like the game is mostly a one-off gimmick and not something I see people (including myself) keeping a long-term interest in.