Gamespot reports that yet another publisher has joined the ever-growing stable of Steam fans. 2K games is working to bring some of their games to the service, with Civilization III and IV coming to Steam this week
, and other titles to follow. From the article: "Also included will be the high-seas adventure Sid Meier's Pirates! and the alternate-history real-time strategy game Shattered Union ... According to a statement released today by Valve, Steam currently has some 10 million customers for both its 'core' products--which include advanced shooters such as Half-Life 2--and casual games, such as PopCap Games' Bejeweled and Zuma. "