The tenth season of Family Guy premiered on the Fox network from September 25, 2011, to May 20, 2012 with a one-hour broadcast of two episodes. The series follows the Griffin family, a dysfunctional family consisting of father Peter, mother Lois, daughter Meg, son Chris, baby Stewie and the family dog Brian, who reside in their hometown of Quahog, a fictional city in Rhode Island.

"Lottery Fever" is the tenth season premiere of the American animated television series Family Guy. The 166th episode of the series overall, it originally aired on the Fox network in the United States on September 25, 2011. The episode follows the Griffins after they win the state lottery, and go on to spend the money with no regard. Peter becomes power hungry, and demands that Quagmire and Joe perform tasks for him when he invests in one of their projects. This ultimately causes the group to end their friendship, to the dismay of Peter's wife, Lois, who tells her husband that the money has changed him for the worse. After continually wasting the money on various expenditures, the family discovers that they have gone broke, and return to their lives as a lower middle class family. Peter also apologizes to Quagmire and Joe, repairing his broken friendships.