Tournament formats explained: bracket, round robin, points or heats

Most guides to tournament formats explain how a bracket works and stop. The harder question is which format suits the evening you are actually having, and the answer changes completely between six people and sixty.

Single elimination

Lose once, you are out. The field halves every round, so it finishes fast and predictably: sixteen players is four rounds, thirty-two is five.

Good for: large fields, hard time limits, and anything you are streaming where a clean narrative matters.
Bad for: a living room. Half your guests are out after one match, and the person who drew the strongest player first is out purely on scheduling.

Double elimination

Two brackets. Lose in the winners bracket and you drop to the losers bracket rather than going home; lose twice and you are out. Roughly double the matches of single elimination for the same field, so budget the time.

Good for: competitive fields where one bad match should not decide it.
Bad for: short evenings. It is the format most likely to overrun.

Round robin

Everyone plays everyone. With six players that is fifteen matches; with ten it is forty-five. The growth is what limits it, and it catches people out.

Good for:eight players or fewer. The fairest result you can get, because nobody’s finish depends on the draw.
Bad for: anything above ten, where the match count runs away.

Points

Everyone plays every round and scores by finishing position. Highest total after the last round wins. No elimination, no bracket, and you can add or drop a round without breaking anything.

Good for: almost every casual night, especially with mixed skill levels and people arriving late.
Bad for: tension at the end. A big lead can make the last round meaningless unless you weight it.

Heats into mains

Borrowed from sprint car racing, and underused outside it. The field splits into heats, and how you finish your heat decides which final you are in. Win it and you are in the A Main. Otherwise you are in the B or C, racing to transfer up.

Good for: larger fields where you still want everyone racing all night. Nobody is eliminated, and the lower finals are genuinely competitive because there is something to win.
Bad for: very small groups. Below about twelve there is nothing to split.

Picking one

The format is not the fun

A format decides who wins. It does not decide whether the evening was any good. That comes from whether people were playing rather than watching, whether the matches were close, and whether anyone could tell what was going on. Pick the format that keeps the most people in the most matches, and you will be right more often than not.

If you are running something where one person always wins, the friends guide covers how to keep the night competitive anyway.