I personally haven't played SF, I'm waiting for optimization/bug fixes/discount. I HAVE been watching reviews and gameplay videos and am not particularly impressed. So far, from all the reviews and gameplay I've seen, the physics engine is by far the most impressive thing I've seen from this game. It really has me curious what engines can support simulations like this. It also has me really curious how SC's engine would handle something like this in a single player environment. What do you guys think? this stuff is super cool to me.