The game with Carlsen, who won Gold despite the defeat, was the talking point for thousands of chess buffs on the social media as Anand is set for a re-match with Carlsen in November to determine the next world champion.
Anand, a five-time world champion, had lost the crown to Carlsen last year.
Anand, tied at joint third spot on seven points before the start of the final day was trailing Carlsen by a full point and did well to beat the Norwegian in the twelfth round of the championship to declare his real intentions.
For the records, Carlsen ended with 11 points out of a possible 15 for a clear first place while Caruana, Anand and Alexander Morozevich of Russian ended joint second on 10.5 points apiece.
As the tie was resolved, Caruana was a bit superior to Anand while the Indian star was ahead of Levon Aronian of Armenia and Alexander Morozevich of Russia on tiebreak.
Anand, in fact, had last three drawn games after beating his arch-rival Carlsen.
Italian Fabiano Caruana finished second ahead of Anand thanks to his fine start and a brilliant mid-event. The Italian is perceived as the next big star in chess and he did not disappoint his fans in the world rapid.
Among other Indians in the fray P Harikrishna apparently lost steam on the last day as he could muster just two points out of five games. This was only good enough to finish on 7.5 points, a tally matched by compatriot Surya Shekhar Ganguly.
There will 21 rounds in the world blitz to be played over next two days.
