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Some new packs and an empire pack were added to Steam for Age of Empires Online. To celebrate, they are on sale for 50% off until November 8th.
Age of Empires Online – Empires Online Domination Pack = $14.99 / £11.49 / €13.99
Age of Empires Online – Empires Pro Civilization Pack = $14.99 / £11.49 / €13.99
Age of Empires Online – Empires Online – Empire Booster Bundle = $9.99 / £7.49 / €9.49
The packs and booster require the base Age of Empires Online game, which is free to play.