| # | year | City | Country | Total teams | Semifinals | Onsite teams | Champion uni | Champion country |
|---|
| 1 | 1991 | San-Antonio | USA | 500+ | 12 | 25 | Stanford U | USA |
| 2 | 1992 | Kansas-City | USA | 600+ | 13 | 30 | U of Melbourne | Australia |
| 3 | 1993 | Indianapolis | USA | 600+ | 15 | 31 | Harvard U | USA |
| 4 | 1994 | Phoenix | USA | 628 | 15 | 35 | U of Waterloo | Canada |
| 5 | 1995 | Nashville | USA | 780 | 16 | 38 | Freiburg U | Germany |
| 6 | 1996 | Philadelphia | USA | 800 | 17 | 43 | U of California, Berkeley | USA |
| 7 | 1997 | San Jose | USA | 840 | 22 | 50 | Harvey Mudd College | USA |
| 8 | 1998 | Atlanta | USA | 1038 | 23 | 54 | Charles U | Czech Republic |
| 9 | 1999 | Eindhoven | Netherlands | 1457 | 25 | 62 | U of Waterloo | Canada |
| 10 | 2000 | Orlando | USA | 1968 | 28 | 60 | SPb SU | Russian Federation |
| 11 | 2001 | Vancouver | Canada | 2160 | 30 | 64 | SPb SU | Russian Federation |
| 12 | 2002 | Honolulu | USA | 2362 | 29 | 64 | Shanghai JiaoTong U | China |
| 13 | 2003 | Beverly Hills | USA | 2873 | 30 | 70 | Warsaw U | Poland |
| 14 | 2004 | Prague | Czech Republic | 3150 | 31 | 73 | SPb IFMO | Russian Federation |
| 15 | 2005 | Shanghai | China | 4259 | 32 | 78 | Shanghai JiaoTong U | China |
| 16 | 2006 | San-Antonio | USA | 5606 | 33 | 83 | Saratov SU | Russian Federation |
| 17 | 2007 | Tokyo | Japan | 6099 | 34 | 88 | Warsaw U | Poland |
| 18 | 2008 | Banff | Canada | 6787 | 35 | 97 | SPb IFMO | Russian Federation |
| 19 | 2009 | Stockholm | Sweden | 7109 | 35 | 100 | SPb IFMO | Russian Federation |
| 20 | 2010 | Harbin | China | 7319 | 38 | 103 | Shanghai JiaoTong U | China |
| 21 | 2011 | Orlando | USA | 8305 | 38 | 105 | Zhejiang U | China |
| 22 | 2012 | Warsaw | Poland | 8400+ | 39 | 112 | SPb NRU ITMO | Russian Federation |
| 23 | 2013 | St. Petersburg | Russian Federation | 9000+ | 40 | 120 | SPb NRU ITMO | Russian Federation |
| 24 | 2014 | Yekaterinburg | Russian Federation | 10000+ | 40 | 122 | SPb SU | Russian Federation |
| 25 | 2015 | Marrakesh | Morocco | 14000+ | 42 | 128 | ITMO University | Russian Federation |
| 26 | 2016 | Phuket | Thailand | 14000+ | 43 | 128 | SPb SU | Russian Federation |
| 27 | 2017 | Rapid City | USA | 14000+ | 43 | 133 | ITMO University | Russian Federation |
| 28 | 2018 | Beijing | China | 16000+ | 43 | 140 | Moscow SU | Russian Federation |
| 29 | 2019 | Porto | Portugal | 16000+ | 43 | 135 | Moscow SU | Russian Federation |
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