In 2006 , The Roots signed to Def Jam .
In 2006 , The Roots released Game Theory under Def Jam and Rising Down in 2008 ; the band 's album How I Got Over was released in 2010 .
In 2006 , The Roots signed to Def Jam , and released Game Theory under Def Jam and Rising Down in 2008 ; the band 's album How I Got Over was released in 2010 .