The Wall

 is a recurring endurance Head of Household competition.

Rules
Some seasons include a twist where balls are shot at the houseguests for them to catch. In these cases, the first houseguest to catch a certain number of balls, or the last houseguest to fall, wins Head of Household.
 * 1) A large wall is constructed, with a small platform for each houseguest to stand on. Depending on the season, the wall may also have fixtures which houseguests can hang onto.
 * 2) Houseguests must stay on the wall for as long as possible, while facing obstacles such as the wall tilting forwards, being blasted with cold water or slime, the platform under them moving, or being hit with large objects.
 * 3) Once a houseguest falls off the wall, they are eliminated from the competition. The last houseguest standing will become the new Head of Household.

United States
The competition first appeared on Big Brother 1 (US), during Week 1. Isabelle Nguyen won the competition, winning her first and only HoH of the season.

United States
{|class="wikitable" style="margin:auto; text-align:center; font-size: 9pt;" ! style="border: 1px dotted #CCC;" | Season ! style="border: 1px dotted #CCC;" | Week ! style="border: 1px dotted #CCC;" | Competition Variant ! style="border: 1px dotted #CCC;" | Name Variant ! style="border: 1px dotted rgb(204, 204, 204);"| Winner
 * - style="background-color:#CCCCCC;"
 * style="background-color:#CCCCCC;" | 1
 * style="background-color:#CCCCCC;" | 1
 * rowspan="1" style="background-color:#CCCCCC;" | Head of Household
 * style="border: 1px dotted #CCC;" | "On The Edge"
 * style="border: 1px dotted rgb(204, 204, 204);" | Isabelle Nguyen
 * style="border: 1px dotted rgb(204, 204, 204);" | Isabelle Nguyen