premise: Civilization IV is a turn-based strategy video game.
hypothesis: Civilization III . The game offers very sophisticated game play in terms of both mechanics and strategy . Civilization IV . Civilization IV uses the 4X empire-building model for turn-based strategy gameplay , in which the player 's main objective is to construct a civilization from limited initial resources . The game has received critical acclaim and was hailed as an exemplary product of one of the leading video game producers in the turn-based strategy genre .