Yea, the paradox approach of having a game speed setting (set to either pause, 1, 2, 3, 4, or 5; with 1 being very slow and 5 looking like it's going about as fast as it can) works very well for their grand strategy stuff. Though their stuff is actually a series of discrete steps (measured in days in most of them, and in hours in Hearts of Iron, iirc), with no actual sim stuff happening inbetween those steps. That I could see, anyhow.