Out of curiosity, Thrasher, how many games have you played with a dynamic time limit? Not just "stand around and protect the crate for 5 mins" or have a flat time limit to finish a level, but one where the more time you take changes what you see later on, as events pass you by?

I'll be honest, I can't recall one. I wouldn't want to have to write for one either; you would have a ton of work making it happen and not seem arbitrary.