https://www.newegg.com/aspyr-sid-meier-s-civilization-vi-platinum-edition/p/N82E16832351158

Steam key, redeems on Mac/Win/Linux, includes all the DLC. DLC alone is worth the price and…

Civilization VI Platinum $26 @ Newegg, includes all DLC : Win/MAC/Linux

Source: [H]ardOCP – Civilization VI Platinum @ Newegg, includes all DLC : Win/MAC/Linux