Big Four is a special term used in Pinoy Big Brother that refers to the final four housemates who survived the weekly evictions and able to reach the Big Night finale wherein one of them becomes the Big Winner.
In the show, being part of the Big Four is already an achievement as each Big Four finalist receives a certain prize package depending on their final placements at the Big Night finale.
There are two ways to get a Big Four slot; either win the annual Big Jump Challenge or survive the final eviction.
The Big Jump Challenge or simply called "Big Jump", is one of the important challenges in the series. It typically appears in the final weeks, and it gives the remaining housemates a chance to secure a slot in the Big Four. The winner of the challenge automatically becomes part of the Big Four and will be safe from further evictions until the Big Four finalists are complete.
Typically, the final eviction night voting is done through an open-voting process, wherein instead of the usual nominations, all remaining housemates with the exception of the Big Jump challenge winner, face the public vote for the remaining Big Four slots. The housemates who received the highest votes gain a Big Four slot, while the housemate with the least amount of votes becomes the final evictee of the season.
Big Night's Prizes
Just by being part of the Big Four, it will guarantee any Big Four finalist a cash prize and various additional prizes that may vary from every season.
The prizes of the Big Winner usually receives a cash prize of ₱1,000,000 (or ₱2,000,000 during Season 4), a house and lot ( or a condo unit in some seasons), and an Asian tour package for two.
The Runner-Up or 2nd Big Placer as the show calls it receives a check of ₱500,000 and additional prizes.
The 3rd Big Placer receives a check of ₱300,000 and additional prizes.
The 4th Big Placer receives a check of ₱250,000 and additional prizes.
In some instances, the usual Big Four slots can get affected by a season's twist.
In Pinoy Big Brother: Teen Clash 2010, the usual Big Four was raised to Big Six after the Pinoy Housemates won a challenge, giving them two additional slots for the Big Night.
In Pinoy Big Brother 7 the Big Four was raised to Lucky 7 after the remaining 8 housemates succeeded in the Dream Team Challenge. However, since the season had a two-evening Big Night, the Big Four was still announced eventually after the announcement of the 7th, 6th and 5th Big Placers and continued on to the second evening where the Big Winner was announced.
In Pinoy Big Brother 8, while each batch still has its own Big Four and a Big Winner, the final batch that consists of every Big Four will have the Big Otso reaching the Big Night. In addition to the Big Winners of each batch, the Big Otso will consist of four other housemates who were part of the final batch in this season. However, like the previous season, this season also had a two-evening Big Night, and the final batch's Big Four advanced to the second evening.
In Pinoy Big Brother 8, the usual Big Four became Big Otso Housemates after the announcement of Batch Winner for each batch. So far, it’s the most number of finalists ever reach The Big Night finale. To have the extra slots for The Big Night, there will be call Big Batch Bakbakan.
With Pinoy Big Brother 8 being divided into chapters or "batches" with a separate gameplay to each other, each of the batches had their "Batch Big Four" and also a "Batch Winner"
In Pinoy Big Brother 8, the entire Big Four of the first adult batch were also part of the final Big Otso.