Both sides feature entirely different enemies (though they can cross over into other areas) and their own unique puzzles and lore. Stuff like clock towers that literally control the flow of time, a jester that frequently helps you along the palace, and quill pens that help fill in magic door...
In the context of the show, you have to appreciate this. The first four quotes from Americans that I read out, three of them are real. I made one up. (LAUGHTER) The letters, people complaining about Islam, they were exaggerated versions of real ones I've had. The quote from the guy...