Brawl of the Objects (BOTO) is a YouTube series created by Anthony Kos (known as Anko6theAnimator on YouTube). It's an "object show", a cartoon-like series that involves anthromorphic (a non-human being that has human-like characteristics) object characters competing for a prize through competitions and eliminations.
BOTO is loosely based off the TV series Total Drama Island, where the premise is the same--characters compete for a prize. In BOTO, the prize is a golden ticket that can grant any one wish. The competition goes like this: There are two teams, Team Chocolate and Team Vanilla. Each episode, the team does a challenge to determine who wins. The team that loses is up for elimination.
"Up for elimination" means the viewers in the comments must vote one (or two in the case of the episode If You Can't Take The Heat) contestant to be out of the running for the prize. This process was plan to go on until the final two, but Kos wanted to end the series early, as he was losing interest, and it was cut off to the final five contestants instead. There was a double elimination to determine the final five and move the show along faster because of that.
However, at one point throughout the competition, the merge happens, in episode nine Downhill Disasters. The "merge" is when the competition is to the point where there's not enough contestants for each team, and then the contestants must work by themselves. Only one (or two in the episode Unexpected Expedition because they work in pairs) is able to win immunity, meaning he or she is not up for elimination.
The typical voting screen at the end of most episodes, depending on who's up for elimination. Screenshot from Brawl of the Objects Episode 11 - If You Can't Take the Heat by Antony Kos, YouTube.
The voting screen for the final five contestants, Hot Dog, Party Hat, Pizza, Shelly, and Shieldy, to win. Screenshot from Brawl of the Objects Episode 12 - Rookie Mistakes by Antony Kos, YouTube.