Hey, pretty neat. You got a decent amount of mileage out of this idea -- limiting vertical movement, limiting movement to only one direction, not being able to move at all. I enjoyed pressing F to pay respects as well. You could even do more puzzle-y levels with some of those mechanics, and I think it would be neat to see this idea pushed even further in terms of creative control types, though I'm not sure in what way exactly.
I liked the design decision to show the rules clearly at the top of the screen, and the slowdown that occurs when the rules change. That way, despite all of the chaos of the rules, the player is not totally lost and confused.