A thunderous third final meeting between Germany, 7-1 conquerors of Brazil in the last four, and bitter rivals Argentina was settled by a stunning goal from substitute Götze befitting of such an outstanding tournament.
The magical strike meant Germany broke the South American stranglehold on World Cups held in the Americas, and Götze became the first substitute to score the winner in the final.
The result also left Argentina forward Lionel Messi without the title he so craved to crown his glittering career.
"All of Germany is world champion now," the winners' immense goalkeeper Manuel Neuer said after the Germans added the title to West Germany's triumphs of 1954, 1974 and 1990.
Only Brazil, with five World Cups, have won the trophy more times.
It will be a richly deserved smile.
As badly as all of Argentina hankered for a triumph in Brazil, Germany were worth their win over a subdued Messi and his team mates who counter-attacked dangerously but lacked the killer touch in front of goal, failing to get a shot on target.
Messi, attempting to emulate the great Diego Maradona by leading Argentina to a World Cup triumph, had a poor final which was summed up with almost the last kick of the game when he had a chance to equalise with a free kick 30 metres out.
Although the scoreline was the same as West Germany's 1-0 win over Argentina in 1990, it never reflected that dour game in Rome and had far more in common with their exciting final in 1986 which a Maradona-inspired Argentina won 3-2 in Mexico City.
Both teams went looking to create chances in an open, attacking match that proved a real contrast in styles.
"We gave it all, all our bodies could endure," Argentina midfielder Javier Mascherano said. "The pain is immense because we wanted to take the cup back to Argentina.
"The pain will last forever."
Germany Rocked
Germany's preparations had been rocked before kickoff when midfielder Sami Khedira, one of the tournament's best players, pulled a calf muscle in the warm-up.
But Kramer only lasted 32 minutes, going off after a collision with Ezequiel Garay's shoulder which left him looking dazed, and Germany had to rejig their side again.
Coach Joachim Loew brought Schürrle on in an attacking midfield role with Mesut Ozil dropping back into a more defensive, central position.
Despite the upheavals Germany ended the half with 65 percent possession and came close to seeing that domination pay off when Benedikt Hoewedes headed powerfully against a post just before the interval, although a linesman's flag was up for offside.
Argentina striker Gonzalo Higuain should have done far better before that, though, when he was gifted a chance in the 20th minute following a careless header towards his own goal by Germany midfielder Toni Kroos.
Wasted Chance
The loose ball went straight to Higuain but, with only Neuer to beat, he dragged his shot embarrassingly wide.
Ten minutes later he swept the ball home after a perfect cross from Ezequiel Lavezzi and went on a long celebratory run thinking he had scored, but he was rightly flagged offside.
Four-times World Player of the Year Messi did have a good chance two minutes after the break when he escaped the shackles of the defence but his angled left-foot shot went narrowly wide.
A pivotal moment came in the 88th minute when Miroslav Klose, Germany's 36-year-old striker who set the all-time World Cup scoring record of 16 goals in the demolition of Brazil, went off to be replaced by the baby-faced Götze.
Klose, playing in his fourth and last World Cup, was given a standing ovation as he left the field, but an even greater German celebration was drawing closer.
The decisive moment was not far away, however, and it gave the World Cup a fitting finale.
Götze took the ball down on his chest brilliantly from Schürrle's cross and sweetly fired home the 171st goal of the tournament to equal the record set in France in 1998.