The format in one breath
Playoff overtime is the purest form of hockey the sport offers. If a playoff game is tied after regulation, the teams play a full twenty-minute period at five skaters a side. The first goal wins. If nobody scores, they do it again. And again. No shootout, no gimmick, no clock running out on a tie. Somebody has to score.
That structure sounds simple, and it is. What makes it brutal is what it does to the people playing it.
How it differs from the regular season
The regular season and the playoffs handle a tie very differently, and the contrast is the whole point.
- Regular season: a single five-minute overtime played three-on-three, and if that solves nothing, a shootout decides it
- Playoffs: full twenty-minute periods, five-on-five, sudden death, repeated until a goal is scored
The three-on-three format is designed to manufacture a quick, exciting finish for a regular-season game that needs to end on schedule. The playoffs refuse that compromise. A series is too important to be decided by a skills competition, so the game reverts to real hockey and simply continues.
There is no such thing as a tie in the playoffs. There is only a game that has not ended yet.
Why sudden death changes everything
Knowing that one mistake ends your season rewires how a game is played. Coaches shorten their bench to their most trusted players. Defensemen stop pinching. A routine giveaway that costs nothing in the first period becomes catastrophic in overtime. The result is a strange, coiled tension where both teams desperately want to score and are terrified to gamble.
The physical toll is real too. Multiple overtimes mean players skating the equivalent of an extra game or more on legs that are already spent, in a match where every shift could be the last. It is why the longest playoff games become legends, and why the goalies in them look like they have aged a decade by the end.
The one-goal math
Because the first goal ends it, overtime rewards a specific kind of play: get pucks to the net, crash for rebounds, and never, ever force a play that could go the other way. The winning goal in overtime is far more often an ugly scramble than a pretty rush, precisely because both teams have clamped down on risk.
Understand the format and you understand the drama. Playoff overtime is not the regular-season overtime with the stakes turned up. It is a different game, played by exhausted athletes under rules that make a single second of carelessness fatal. That is why it produces the most unforgettable moments the sport has.