Strategy games are a category of games that depend on skillful thinking, building, upgrading and planning to achieve final victory. Specifically, a player must plan and commit a series of actions against his opponents, for reduction of enemy forces or to achieve other goal.
Victory is achieved through superior planning, and a very small element of chance that takes small role. In most strategy games, the player is given a godlike view of the game world, and indirectly controls game units under their command.
Some of strategy games are much simpler, such as tycoons, tower defence, café management games where your basic goal is to receive recourses or money by management, building, upgrading or other player actions intended for efficiency.