It's the annual world tournament the regular professional Dota 2 season culminates to, and it's its tenth installment. Dota 2 is a competitive video game published by Valve, and they are also sponsoring The International tournament. Ever since the first installment in 2001 with US $1 million awarded, The International tournament has broken every year the record for the largest prize pool in a video game tournament, including this year with a prize pool totaling a little over US $40 million.