Ligtask Challenge is a major safety competition in Pinoy Big Brother.
Ligtask Challenge is a portmanteau of the Filipino word Ligtas which means safety or safe in English and the word task.
Originally called as the Ligtask Games, it was first introduced in Pinoy Big Brother 2 as an immunity competition wherein all housemates including the nominees compete every week for a chance to get an immunity for the next week's nominations, and the winner would be spared from the upcoming nomination. If ever the winner was a nominee of the current week, the immunity power will take effect on the following week, but if he/she got evicted that week, the immunity power will be passed on to the runner up of the Ligtask Games.
The competition made a short return in Pinoy Big Brother: All In where it was called InstaSave, giving a housemate a chance to remove himself/herself from the week's Set of Nominees.
It fully returned as a veto competition in Pinoy Big Brother: 737 officially called as the Ligtask Challenge wherein nominated housemates would compete every week to remove themselves from the nominations list. However, if two housemates tied in the challenge, none would be spared.
In Pinoy Big Brother 7, the Ligtask Competition was brought back and had two uses as it both served as an Eviction Challenge and a Veto Challenge. However, it was mostly used as the eviction process throughout the series.
The Ligtask Challenge was brought back in Pinoy Big Brother: Otso. For the first time after 11 years, the Ligtask was once again used as an Immunity Competition during Batch 1. Every week, the housemates would compete in pairs and the winning pair would receive immunity from the upcoming nominations. Later in Batch 2, the Ligtask had been also used as a Nomination Challenge.
In Pinoy Big Brother: Connect, the ligtask challenge returned again as a veto challenge for the nominees.