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.
An army of Macedonians (Royal Pezhetairoi supported by Thracian Peltasts) attempts to quell rebellion along their northern borders, but the Celtic invaders won't give up without a fight! The battle is fierce, with many falling on both sides. Will the discipline of the Macedonian syntagma win out, or will the reckless daring of the Celts carry the field?