2K Games and Valve have announced an agreement to power all PC versions of Sid Meier's Civilization V with many of Steamworks' features and offer a special Digital Deluxe Edition via Steam. In addition, customers who pre-order the regular or Digital Deluxe editions of the game on Steam will be rewarded with a free map pack when the game launches in Autumn 2010. Sid Meier’s Civilization V players will enjoy the benefits of the Steamworks' features included in all PC versions such as auto-updating, Steam Achievements, downloadable content, multiplayer matchmaking and more. Sid Meier's Civilization V Digital Deluxe Edition will expand players' conquests with the new Babylonian civilization and their ruler, Nebuchadnezzar II (c. 630 – c. 561 B.C.). As King of Babylon, gamers will be able to expand their empire with advanced Babylonian Bowmen to rightfully earn the title of Nebuchadnezzar the Great. Sid Meier's Civilization V Digital Deluxe Edition will also include an in-depth "Behind the Scenes at Firaxis with Civilization V" video feature, as well as the game’s epic soundtrack.