For the first time ever — that we can find — Quinton “Rampage” Jackson has revealed how he got his legendary nickname and it all stems from a violent 8-bit gorilla.

GameTimeGirl

The former UFC champ says his cousin coined his famous moniker after playing the arcade classic from the ’80s … “Rampage.”

For the uninitiated, Rampage featured a couple of smashaholic monsters pummeling their way through cities by plowing their fists through skyscrapers … it was awesome.

And now you know.

TMZ