2K Games and Valve today announced that Steamworks will be integrated into Civilization V allowing all of its features to be accessible including auto-updates, Steam Achievements, downloadable content and multiplayer matchmaking.

As well as this, the game will come as a Digital Deluxe Edition via Steam and anyone who pro-orders the Regular or Digital Deluxe editions through Steam will be rewarded with a free map pack when the game launches.

"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.

Gamers who pre-order any version of Sid Meier's Civilization V from Steam will receive the downloadable bonus content, Cradle of Civilization Map Pack: Mesopotamia, for free when the game is available. The map pack will let players experience the traditional Western and Middle Eastern "Cradle of Civilization." The pack will include the Fertile Crescent with the Nile River valley to the west and extending east down the Tigris and Euphrates river valleys to the Persian Gulf. Leaders will be able to explore new terrain, cultures and conquests."

For those who can't wait, 2K Games is offering a Steam-wide sale on all previous Civilization games for a limited time beginning today.