The victory puts the Germans back on track to advance to the knockout stage if it can get a win against South Korea and have a better goal differential than the Swedes or Mexico depending on the outcome of their final match.
Germany, playing in the Group of Death, found itself looking at an early exit from the World Cup during Saturday's match against Sweden. Both teams love to keep the ball on the ground, but the tactical strictness of the Koreans with very little room for creativity (or very little ability to deploy it) could come in handy for Mexico, who stunned Germany not just by beating but by completely outplaying them.
The world champions were staring elimination at the first hurdle at a World Cup for the first time since 1930 when Kroos stood over a free-kick with 94 minutes on the clock in Sochi.
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Sweden could not get out of their own half as Germany piled forward at every opportunity but Mario Gomez contrived to lash the ball over the bar from five yards out.
Kroos passed the ball short to Reus, who stopped it for his team mate to curl it into the top far corner of the goal for a sensational victor deep into stoppage time.
Germany's midfielder Mesut Ozil wrote on his Twitter account after the match "What! A!"
Salah´s Egypt leave World Cup winless after late Saudi defeat
But the team was still eliminated from the World Cup after three straight losses in Group A. Mohamed Salah put aside his highly publicized troubles to score another World Cup goal .
Brazil takes Group E with victory over Serbia
He is a crucial part of the Brazil team, and the attacking threat he offers down the left flank is a feature of his play. Brazil has won Group E at the World Cup after defeating Serbia 2-0 on Wednesday in their final group stage match.
Egyptian Commentator Dies After Watching His Country Lose to Saudi Arabia
Saudi Arabia's Salem Aldawsari flips to celebrate scoring his side's winning goal with the final kick of the game against Egypt . Football star Mo Salah scored first within the first 25 minutes, marking Egypt's fourth ever goal at the World Cup .
El Tri followed up their stunning victory over Germany in the Group F opener with a convincing 2-1 win over South Korea on Saturday.
In the aftermath to one of the most memorable victories in Germany's long history of success, Toni Kroos and Marco Reus had a message for the critics back home waiting to see them fail.
Germany now face a decisive final tie with South Korea to seal their passage into the last 16.
South Korean President Moon Jae-in and his wife Kim Jung-sook looked on from the stands in the Rostov Arena as part of their three-day visit to Russian Federation, but a second consecutive 1-0 defeat leaves the 2002 semifinalists them on the brink of an early exit from the tournament. South Korea, meanwhile, will be eliminated if Sweden wins or draws.
Mexico, which upset defending champion Germany in its opening match, took the lead when Vela converted from the penalty spot in the 26th minute. While a late goal from South Korea made the score close, the game, in reality, wasn't.
Despite an unimpressive first half, Belgium beat Panama 3-0 in its 2018 FIFA World Cup Group G opener last week.