That's the big question. I would hazard a guess at 1800-1900 opium wars in china etc. I just cannot see the game working in later periods though, WW1 TW for example. Also I don't see how they could apply many of the features they've added into earlier periods, (MTW has been done to death); revisiting STW would be fun but the theater is to limited. Personally I'd like an RTW2, sea battles are viable, also the map scale wouldn't be restrictive, the romans started trading with china before they "fell".
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