first twitter based game?

Spymaster is a social game based on Twitter, a social messaging service. Each player becomes a master of a spy ring based upon their Twitter followers list. The more people that follow you and are playing characters in Spymaster, the more powerful your network will be. As a spymaster, you can perform tasks or attack other spymasters on Twitter. With each successful attempt, you will gain virtual currency and points that allow you to grow even stronger.