The most goals scored by one team in an NHL game was 16. The Montreal Canadiens defeated the Quebec Bulldogs 16-3 on March 3, 1920.
In the same season, Montreal helped set the record for most goals scored by two teams in a single game. The Canadiens and Toronto St. Patrick's combined for 21 goals on January 10, 1920, with Montreal winning 14-7. The Edmonton Oilers and Chicago Blackhawks tied the record on December 11, 1985. The Oilers won 12-9.