Casting: This season, the cast is based on Heroes vs. Villains, having 7 houseguests with a heroic personality & 7 villainous personalities
Unknown HoH: Every 2nd week, the HoH will be unknown to the houseguests this unknown HoH can get to nominate 2 houseguests for eviction without anyone knowing, the HoH can nominate themselves for eviction if they wish too.
Hidden House Key: Returned since Big Brother 1: Just323. After each PoV ceremony, a clue of the item will appear on the screen. They will only have 15 seconds to read the clue each and every week until it has been found. Once it has been found, they can use to save an ally or save the nominee. Then they will replace a nominee of their choice, this twist goes on until the final 6. If the idol is already before the final 6. The idol will be re-hidden.