Big Brother: Over the Top (or BBOTT for short) is a spin-off American reality television series of the show Big Brother that aired exclusively online. The show premiered on September 28, 2016, and ended after 65 days with a season finale on December 1, 2016, only on CBS All Access, an over-the-top subscription streaming service. The spin-off was officially announced by CBS on August 3, 2016, while Big Brother 18 was still in progress.