It says:
Empire: Total War Update Released
March 31, 2010, 9:08 am - Valve - Product Update

SEGA Europe Ltd. is pleased to announce that "Update 1.6" for the award winning Empire: Total War will be available today. The update introduces a large number of revisions to the Artificial Intelligence in real time battles. Amongst many other improvements, the Battle A.I. now maintains its lines more rigorously, has better army movement and engages in melee more tactically. It is also better at protecting its own advance and engaging opponents with flanking attacks.


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