Including trips to Cabo San Lucas, Mexico flying Delta Air Lines.
The Mexican food chain offered its customers the chance to win various prizes with each order of a main meal at any of its outlets.
"Originating in Mexico centuries ago, Day of the Dead celebrates loved ones who have passed. Dia de los Muertos, as it’s known in Mexico, roughly translated means: ONE. EPIC. FIESTA!" the brand said.
"Spirits are welcomed back home to party with the living… Faces are painted, altars are decorated with their favourite foods (burritos obvs!), drinks (a sh*t-tonne of tequila), sugar skulls and sweet beats!"
From October 24, Mad Mex Deadly Days is offering an "epic prize pool of adventures and experiences" up for grabs- including five trips to Cabo San Lucas, Mexico flying Delta Air Lines.
Promotion lasts until Sunday 20 November.
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