You may wish to check the setting for Barbarians. I generally set the Barbarians to Raging as well as making the units more capable, such as using the Gallic Swordsman for the basic Barbarian unit, and the Cossack for the Advanced Barbarian unit, along with adding enough hit points to bring the unit up to the Regular for combat experience. I use the Privateer for the sea unit, with added hit points as well. The last change is currently biting me back in the game I am currently playing, as the computer civilizations are making great use of it to harass my shipping as well as each others. I have toyed with the idea of using Dinosaurs as Barbarian units in TETurkhan's Test of Time scenario in Play the World. However, I think that a stack of 20 or so T-Rexs might be a bit much.