Pace is varied nicely throughout the campaigns, with the first couple of missions typically focussing on combat rather than town management and lasting only a couple of hours. The latter episodes in the campaigns are much more epic affairs, taking place on larger maps, with subterranean dungeons thrown in for good measure, which may take anything up to eight hours to conquer. So with 30 missions in the single-player campaigns, averaging around four hours each to complete, you're looking at well over 100 hours' worth of gameplay for your money; and that's before you even factor in the extensive multiplayer options and the standalone single scenario missions. That's a heck of a lot of game...