Civilization VI has been out less than a month and still has no Steam workshop, but modders have already begun to release mods for the grand strategy. The modders over at Civ Fanatics have released an earth map mod that reproduces the Earth landscape.
The map mod however, is so large and taxing that reports have come in that the mod is melting players GPU’s. The modders have stated that the mod is in an alpha state and have said “The giant map is already way above the size of the huge map, it may or may not load on your PC (and will take some time to do so), the Ludicrous map is the max map size before the game refuses to load, and will take more than 4-5 minutes to load (or crash). I’d suggest to lower the textures size in the video option, the game use almost all the 6GB of VRAM of my GPU.”
If you are interested in testing out the map mod you can pick it up here, it might be worth waiting for a finalized, tested version if you are worried about your hardware specs.