Big Brother 4

Big Brother 4: Fans vs. Favorites was the fourth season of Big Brother SIMulator. It began on September 2, 2019 and ended on September 5, 2019. In-game it lasted 17 days, ending when Tianyu Hao won over Parker Colt in a 9-0 vote. This made Tianyu was both the first male winner and the first person to win by a unanimous vote.

Twists

 * Fans vs. Favorites: This season brought back seven well-liked players from previous seasons, the Favorites, as well as seven super fans of the show, the Fans.
 * Instant Double Eviction: In Week 1, an instant double eviction was held in which one Head of Household was crowned. This HOH then had to nominate two Favorites and two Fans for eviction, and the house would vote to evict one of each of the pairs of nominees. Whichever group the HOH did not belong to would be the first to face eviction, with the nominees from the same group also voting in the first eviction. The nominee not evicted from the first eviction would likewise vote in the second eviction.
 * Camp Comeback: The first four evicted houseguests got to stay in the house as part of Camp Comeback. After the fourth eviction, a competition was held in which one of the four houseguests would gain re-entry into the game.
 * Modified Double Eviction: In Week 4, a modified double eviction was held in which two HOHs were crowned, each naming two separate nominees. The HOHs were ineligible to be nominated by one another. The four nominees and two HOHs would then participate in a single veto competition, the winner of which could choose to veto any of the four nominees or leave nominations the same. The house then voted to evict one of each pair of nominees, with the nominees of the second HOH also voting in the first eviction.
 * Double Eviction: In Week 7, a double eviction was held in which one houseguest won HOH and then went on to nominate three houseguests for eviction. After the POV competition, the house would vote to save one of the three nominees, and the two nominees with the fewest votes to save would be evicted from the house.