XS-Mart is a hypermarket chain with several locations throughout Centralia and Discordantia. Originally a general-merchandise retailer, XS-Mart expanded into the grocery industry in the late 1990s, adding grocery departments to several existing and new locations.

In addition to the corporate headquarters in EdgeCity, XS-Mart operates distributions center in WolfRidge and SunsetValley.

Competitors to XS-Mart include CA Marketplace and HowellsSupermarkets.

The Senate of Centralia notably convenes in a former XS-Mart store across the street from Parliament.