'Big Brother 17' Reveals Twin Twist & Battle of the Block Return

Tonight marked the highly-anticipated return of CBS reality show Big Brother – and two more twists were revealed!

Not only will there be the previously announced “BB Takeover” every week, but the “Battle of the Block” competition will be back!

In case you don’t remember, two Heads of Household will be crowned every week, in addition to four total nominees for eviction. Then, the four nominees will compete to keep themselves off the block and dethrone the person who nominated them.

As for the final twist, host Julie Chen announced the “Twin Twist,” which is a throwback to season five. One contestant in the house has an identical twin, who will switch in and out of the game. If the pair can last to week five, they both get to enter the house together.

Watch how the “Twin Twist” (then called “Project DNA”) played out in season five below!

WHAT DO YOU THINK of this season’s three big twists on Big Brother?