Logan Paul is finally revealing how he broke his hand last year ... admitting it happened while drunkenly attempting to get the high score on an arcade boxing game.
TMZ Sports posted pics of Logan with a busted hand back in September ... but for the longest time, no one knew the 5 Ws and 1 H about the injury.
As it turns out, the Maverick was out on the town in Germany ... and when he came across an arcade punching bag at a bar, he grew determined to stroke his own "I'm a real boxer" ego and get the top score.
Logan says the bartender warned him beforehand about a column positioned right next to the game that has resulted in several broken hands in the past ... but he had his eyes set on his goal.
"I said, 'Guy, I'm a boxer,'" Logan said on his "Impaulsive" podcast. "I go, 'I'm not going to hit the f***ing wall.'"
Sure enough, on Logan's third and final attempt ... he gave himself a running start, wound up and his hand made solid contact with the Column of Doom ... shattering his paw in the process.
But, before he went to the hospital, Logan decided to record some epic #content ... showing off his bones and joking about trying the game one last time.
Eventually, Logan went to get checked out, where he learned he broke his third metacarpal -- which is located at the base of the middle finger.
The scary part -- Paul says he was told it's a career-ending injury for boxers.
"It was very hard to hear, it was very depressing -- especially when you're drunk, hearing things like this," Paul said.
But, Logan says he's recovered now and is already back to training ... and as he told us last month, he is planning to take a fight in 2022.
No word on whether Logan will return to that bar for redemption ... but if he does, we're hoping he takes a glove next time.