The International Dota 2 Format
How TI Works

The International began in 2011 as a surprise announcement at Gamescom, where Valve offered a $1 million prize pool — unheard of in esports at the time — for a Dota 2 tournament. The Chinese team EHOME and other top teams attended, but it was Na'Vi from Ukraine who won, and the event immediately established itself as the definitive world championship of Dota.

Since then, TI has been held annually (skipping 2020 due to the COVID pandemic), moving between Seattle, Vancouver, Key Arena, Rogers Arena, Singapore, Bucharest, and other major venues. Each edition has built on the previous, with Valve growing the prize pool via crowdfunding mechanisms that turned TI into a fan-financed spectacle unlike any other event in esports.

Lifting the Aegis of Champions at TI is considered the highest individual achievement in Dota 2. Multiple TI titles are the defining measure of a legendary career — only a handful of players have won more than once.

Teams reach TI through one of two routes: earning enough Dota Pro Circuit (DPC) points during the season to receive a direct invitation, or fighting through regional qualifiers held shortly before the event.

The DPC point system runs through the year's Major events and regional league divisions. Teams earn points based on placement, and Valve allocates direct invites proportionally to the six competitive regions: Western Europe, Eastern Europe (now sometimes merged), China, Southeast Asia, South America, and North America.

The TI group stage features two groups of nine teams playing in a GSL-style league format. Every team plays every other team in their group in a best-of-two series. Each game is counted individually — a 2-0 win gives 2 points; a 1-1 draw gives 1 point to each team; a 0-2 loss gives 0 points.

Final standings determine main event seeding. The top four teams per group enter the Upper Bracket of the main event with a structural advantage. Teams in positions 5–6 per group play tiebreaker matches (if necessary) to determine who enters the Lower Bracket and who finishes 7th–9th in the group (lower bracket entry vs. elimination tiebreaker is critical to prize money).

The TI main event is a full double-elimination bracket for 16 teams (8 Upper Bracket entrants, 8 Lower Bracket entrants from groups). The Upper Bracket provides a safety net — losing once does not eliminate a team; it drops them to the Lower Bracket. A team dropped from the Upper Bracket must win every remaining series through the Lower Bracket to reach the Grand Final.

The team that wins the Upper Bracket Final arrives at the Grand Final with a 1-0 advantage in the series, meaning the Lower Bracket finalist must win twice (in a Bo5) to claim the title. This Upper Bracket advantage is often decisive — the Lower Bracket finalist must overcome both a strong opponent and a structural series deficit.

The TI prize pool is the most famous financial story in esports. Starting with a Valve seed of $1.6 million, the pool grows through Battle Pass (seasonal pass) purchases — 25% of every Battle Pass sale contributes to TI. The result has been prize pools that dwarf any other esports event in history.

TI's double-elimination format has produced more dramatic upset stories than any other esports event. The most celebrated is OG at TI8 and TI9: a squad built from players released or abandoned by other organizations, OG won back-to-back TI titles — still the only team in history to do so. Their TI8 run through the Lower Bracket remains one of the most dramatic championship paths in all of esports.

Team Spirit at TI10 arrived as a largely unknown squad of young Eastern European players, unseeded relative to the giants of Chinese and Western European Dota. They ran the Lower Bracket from round one — never entering the Upper Bracket after group stage — and defeated PSG.LGD in the Grand Final in five games to claim a $18.2 million winner's share.

EHOME at TI1 set the template: a Chinese team widely considered the world's best, they were upset by Na'Vi in the Grand Final, cementing the event's reputation for producing impossible results. TI has never been predictable, and no team has arrived as a heavy favorite and simply won without a fight.