0 A.D. is a free, open-source, cross-platform real-time strategy (RTS) game of ancient warfare. It's a historically-based war/economy game that allows players to relive or rewrite the history of twelve ancient civilizations, from Iberia to Mauryan India, each depicted at their peak of economic growth and military prowess. Developed using Pyrogenesis, a ground-breaking new game engine custom-built to suit this project, 0 A.D. will give players a rich and entertaining real-time gaming experience.
One of the major bonuses for the Iberians is that they will start a match with a ready-made circuit of stone walls for protection. This makes them very difficult to rush and adds a big defensive bonus for them in the early game. Their fortress and defense tower structures are also very strong, making them the most defensive faction in the game.
However, their selection of defensive technologies will be limited, and their limited selection of siege equipment means they will have a hard time defeating the enemy once they have their own stone walls erected. Their über-strong fortresses and defense towers also come with a price, as they are 20-30% more expensive than other fortresses and defense towers.
So, their early circuit wall bonus is definitely a game-changer for the Iberians, but not a game-winner. Their walls help prevent an early defeat but don't ensure an early victory. To achieve victory will require lighting-fast raids on enemy resource operations, devastating ambuscades of unsuspecting enemy columns, daring sorties to destroy enemy siege equipment before they reach your walls, and a slow territory push using "defensive" fortresses and defense towers in an offensive manner.