I'm surprised none of you made the comment that the first Sweden king which has a regnal number, and was perhaps catholic, according to wikipedia, is Eric Stenkilsson (Eric VII (or VIII)). And strangely enough, he take the power in... 1066. What about a game that last from the late antiquity to 1066, filling the gap between EU:Rome and CK2? The only games that would left to make a series lasting during all the history would be 1815-1836 (why they did nothing about it?), the Roman Empire period, and the Alexander the Great and before.