Esports tournament software, from a 16-team scrim to a 256-team open qualifier.

Esports fields scale in a way physical sport rarely does, since an open qualifier can take 256 entries from a Discord post. Knockout depth grows logarithmically, which is why it handles those numbers at all: a 256-team single elimination bracket is 255 matches over 8 rounds, with no byes anywhere in the draw because 256 is a power of two. Doubling the field only ever adds one more round, so 512 entrants is 511 matches over 9.

The browser generators go up to a 64-team bracket, which is the largest draw that renders comfortably on a phone. Above that the draw is the same shape with more rounds in front of it: the round of 256 feeds a round of 128, then 64, and from there the bracket you can preview here is the back half of the qualifier.

The cost is that half your entrants play once. For a free open qualifier that is often acceptable. For a paid-entry event or a league stage it is not, and the format has to guarantee more games. Swiss pairs teams on equal records without eliminating anyone, so a 64-team, six-round Swiss is 192 matches with every team playing all six, which is the standard shape for large chess and card-game events, and increasingly for shooters.

Double elimination sits between the two: every team gets a second life, at roughly double the match count, and it runs live up to a 64-team bracket with the grand final reset included. If you are choosing between the two knockout styles, single vs double elimination covers the trade in detail, and the double elimination bracket generator has an interactive draw you can test your field size against.

Most serious esports events are two tournaments wearing one name: open online rounds that cut a large field down, then a small offline final with a different schedule, a different venue and usually a different production crew. The handoff between them is where brackets get rebuilt by hand and seeding gets lost.

Running both stages as one multi-stage event keeps the qualifier results attached to the teams that carry into the final, so the LAN bracket seeds itself from what actually happened online rather than from someone retyping eight team names at 1am. Group qualifiers advance into the knockout automatically once a group is complete.

The default esports bracket update is a screenshot posted to Discord, which is out of date the moment the next series ends and unreadable on a phone by round three. Casters ask you for a fresh image mid-broadcast; viewers ask which match is next; you answer both while also running the tournament.

A live public link replaces all of it. Enter a result and the bracket advances everywhere at once: for players, for spectators, and for the caster who can now keep it open on a second monitor instead of messaging you. It costs nothing to hand out and needs no account to open. If you want to see the structure before committing an event to it, the tournament bracket generator builds and scores a live draw in the browser.