double dominoA double-12 domino set; One marker per player, plus a marker for the Mexican Train (e.g., a quarter or small object) Objective. The goal of Mexican Train Dominoes is to be the first player to play967 Followers, 277 Following, 41 Posts - Double Domino (@doubledomino) on : Imagining new real-world versions of Gotham's inhabitants... but it seems to be mainly Harley