Since the trebuchets can also attack units directly, they're the star city raider until the discovery of cannons. 因为投石机也能直接攻击单位,它们算得上是攻城利器,直到加农炮发明才会被替代。
In siege warfare, as the game progresses, the attackers will develop trebuchets and progressively bigger and better cannon. 在攻城战中,随着游戏的进行,攻击者将会开发出小型投石机,渐渐的就出现了越来越大的大炮。