Drake ESPY After-Party -- Insane Rager At Mega-Mansion

Drake threw a party after the ESPYs ... with a ton of celebs who drank and ate at one of the most outrageous estate's in L.A.

Mack Maine, Jessica Alba, Blake Griffin, Johnny Manziel, Colin Kaepernick and others partied at the home of Mohamed Hadid ... an L.A. real estate mogul who was once married to Yolanda Foster from "Real Housewives of Beverly Hills."

It's a 50+ million dollar compound that sits on more than 2 acres. The main house -- where Drake threw the party -- is 48,000 square feet.

It's no Versailles ... but close.