In Age of Empires, every civilization becomes exactly the same in terms of gameplay. The Full Tech Tree, or All Techs as it is called in The Forgotten and onwards, is a game option players can choose before starting a game in both Age of Empires and Age of Empires II.Īs the name suggests, the Full Tech Tree option grants all players access to the full technology tree, meaning that all players can train every unit and research every technology in the game, but lose all their civilization bonuses. All Tech option in Age of Empires II: Definitive Edition.