@jrlowe, I am very sorry about how late I am getting back to you on this, but yes, I believe it wouldn't be to hard to make the rider rotate with the ground. I have though about creating a game similar to what you are considering. The hard thing about what you're mentioning would be the rag-doll physics - that would be very difficult. Perhaps I will implement the idea of rotating the actor to the ground in my scenario.

Its not really on purpose. There are only ever 1000 cubes in the game: when they reach the end of the world, they are put back at the beginning. I have fixed that in the original, but have left it in the modern version of the game. Also, if you like it, could you please click the like button?