Messi, just 25 years of age at the time, recorded the absurd tally in 69 games for club and country and topped it off with one final strike in Barcelona's 3-1 victory at Real Valladolid.
79 of his goals came in Blaugrana colours, with the remaining 12 coming in nine international fixtures he played in for Argentina.
He broke the previous world record of 85 goals in a calendar year set by Germany and Bayern Munich striker Gerd Müller 40 years prior.
The six-time Ballon d'Or winner notched 13 goals in 12 Champions League appearances, including five-goal and four-goal hauls against Bayer Leverkusen and Arsenal respectively, as well as five goals in eight Copa del Rey games, two goals in two Supercopa ties and 59 goals in 38 La Liga games.
Breaking it down further, Messi scored 14 penalties, hit nine hat-tricks, averaged a goal every 66 minutes and scored the opening goal in 21 of the 47 games he found the net in.
78 of his 91 goals were scored inside the penalty area, with 40 of his tally coming in the final half hour of games.
Messi's magical 2012 will never, ever be repeated again. He scored more goals than Paris Saint-Germain, Borussia Dortmund, Manchester United and Chelsea.
To add further context to this outrageous goal tally, Cristiano Ronaldo and Robert Lewandowski have scored 91 goals between them in 80 games in 2020.
In 2020, Cristiano Ronaldo and Robert Lewandowski have scored a combined total of 91 goals.- total Barça (@totalBarca) December 21, 2020
In other words, the same amount scored by Lionel Messi alone in 2012.
Messi, who deservedly won his fourth consecutive Ballon d'Or award, also registered 29 assists for his teammates in a truly astonishing year.
And to think there's people out there who believe he's not the best player to have ever played football.
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