At its core, Age of Kings built upon the "rock-paper-scissors" combat model where specific unit types counter others (e.g., Spearmen against Cavalry). However, it introduced several quality-of-life innovations that modern players now take for granted:
Why are the campaigns historically inaccurate? :: Age of Empires II Age of Empires II: Age of Kings
The Eternal Siege: Why " Age of Empires II: Age of Kings " Still Rules the RTS Genre At its core, Age of Kings built upon