Paste the map to the location in Step 1, and rename the file to Balanced6. I was able to start games with randomly named maps. I don't think the name at this step is important. I did not turn any water into land tiles or vice versa. I tested a few of the map editing tools but didn't by any means get in-depth. Generate random map with desired settings 3. Civ6Map to some other name to preserve the file 2. Game started fine, no issues playing through 20 or so turns on a hot seat Debug 'reveal all' confirmed that city states were not generated. This worked perfectly except for the city states. This gave me the idea of locating the pre-made map within the game files and substituting it with a map created in World Builder, then starting a game using the 6-Armed Snowflake map option. I might have made some progress towards starting a game with a custom World Builder map or at least an edited randomly generated map I read online somewhere that the 6 Arm Snowflake map option is not in fact a map script but a pre-made map. Cornflakes They're magically Delicious! EDIT: Original opening post in spoiler.