Overlay Network

An Overlay Network is network created when overlaying 2 or more monsters which forms a portal to Xyz Summon in the Yu-Gi-Oh! ZEXAL. All Xyz Monsters expect special monster like "Numbers" are Xyz summoned through a red spiral portal. The Xyz Materials then turn into orbs of light which surround the Xyz Monsters who absorbs them when the player detaches them. When a Number is Xyz Summoned, a galaxy-like gate appears in which the Xyz Materials (in a energy form) transfer into. The gate explodes, and a Numbers' sealed form appears and unveils itself into its artwork. When a non-"Number" Xyz monster is Summoned, a red colored spiral portal is used instead.