Big Brother 13

Twists

 * Wheel Of Misfortune: Each week the HOH Will spin the wheel to determine which extra competition will be played out during the week.
 * Battle of the Block: The Battle of the Block' has two HOH's and four nominees in which the nominee pairs will participate in a challenge in order to be the last pair standing. The winning duo is safe for the week, and it dethrones the HOH that nominated them, meaning the HOH returns to the normal pool of Houseguests and is eligible to be backdoored. At the end of the week, only one HOH stands, with two nominees remaining on the chopping block for the week.
 * Roadkill: The Roadkill competition would allow the winner to nominate a 3rd house guest for eviction but being remained anonymous in the process.
 * Temptation Competition: Contestants will have a chance before nominations to play in the Temptation Competition to win immunity for the week. Players have the option to compete and if they come last in the competition they automatically go up as a third nominee.
 * Hacker Competition: A new competition that was introduced for the first four weeks of the Jury stage of the game. The winner of this competition gains the ability to anonymously replace one of the two nominees selected by the HOH (however, they can choose not to), nullify one eviction vote, and select the player of their choosing to compete in the Veto competition.